oracle.pg.rdbms.pgql

Class ExprTransVisitor

java.lang.Object

oracle.pg.rdbms.pgql.ExprTransVisitor

public class ExprTransVisitor
extends java.lang.Object

This class translates a PGQL QueryExpression to SQL by visiting each node using the ExprNavigator class.

Field Summary

Fields

Modifier and Type	Field and Description
static int	ASC_DIR
static int	DESC_DIR
static int	FILTER_MODE
static int	GROUP_BY_MODE
static int	ORDER_BY_MODE
static int	PROJECT_MODE

Method Summary

Modifier and Type	Method and Description
static ExprTransVisitor	getExprTransVisitor(ExprContext eCtx) Factory method
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrAvg n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrCount n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrMax n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrMin n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrSum n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Add n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Div n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Mod n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Mul n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Sub n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.UMin n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.BindVariable n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstBoolean n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstDate n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstDecimal n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstInteger n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstString n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTime n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTimestamp n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTimestampWithTimezone n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTimeWithTimezone n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.ConstNull n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.AllDifferent n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.Cast n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.EdgeLabel n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.HasLabel n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.HasProp n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.Id n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.InDegree n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.OutDegree n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.Regex n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Function.VertexLabels n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.FunctionCall n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.LogicalExpression.And n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.LogicalExpression.Not n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.LogicalExpression.Or n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.PropertyAccess n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.Equal n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.GreaterEqual n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.Greater n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.LessEqual n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.Less n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.NotEqual n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.Star n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)
java.lang.String[]	visit(oracle.pgql.lang.ir.QueryExpression.VarRef n, oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes, java.lang.String[][] childSQL, boolean isRoot, boolean negated)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ASC_DIR

public static final int ASC_DIR

See Also:

Constant Field Values

DESC_DIR

public static final int DESC_DIR

See Also:

Constant Field Values

FILTER_MODE

public static final int FILTER_MODE

See Also:

Constant Field Values

GROUP_BY_MODE

public static final int GROUP_BY_MODE

See Also:

Constant Field Values

ORDER_BY_MODE

public static final int ORDER_BY_MODE

See Also:

Constant Field Values

PROJECT_MODE

public static final int PROJECT_MODE

See Also:

Constant Field Values

Method Detail

getExprTransVisitor

public static ExprTransVisitor getExprTransVisitor(ExprContext eCtx)

Factory method

Parameters:

eCtx - context with settings for this translation

Returns:

a new ExprTransVisitor instance

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrAvg n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrCount n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrMax n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrMin n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Aggregation.AggrSum n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Add n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Div n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Mod n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Mul n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.Sub n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ArithmeticExpression.UMin n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.BindVariable n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstBoolean n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstDate n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstDecimal n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstInteger n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstString n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTime n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTimestamp n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTimestampWithTimezone n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Constant.ConstTimeWithTimezone n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.ConstNull n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.AllDifferent n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.Cast n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.EdgeLabel n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.HasLabel n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.HasProp n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.Id n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.InDegree n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.OutDegree n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.Regex n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Function.VertexLabels n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.FunctionCall n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.LogicalExpression.And n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.LogicalExpression.Not n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.LogicalExpression.Or n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.PropertyAccess n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.Equal n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.GreaterEqual n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.Greater n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.LessEqual n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.Less n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.RelationalExpression.NotEqual n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.Star n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

visit

public java.lang.String[] visit(oracle.pgql.lang.ir.QueryExpression.VarRef n,
                                oracle.pgql.lang.ir.QueryExpression.ExpressionType[] childTypes,
                                java.lang.String[][] childSQL,
                                boolean isRoot,
                                boolean negated)
                         throws PgqlToSqlException

Parameters:

n - the QueryExpression node to visit

childTypes - array of return types for n's children

childSQL - SQL translations for n's children

isRoot - true if n is the root of this expression

negated - true if n has a NOT ancestor

Returns:

the SQL translation for the expression rooted at n. 4 columns for a value (T,V,VN,VT) or 2 columns for a VERTEX/EDGE (IT,ID).

Throws:

PgqlToSqlException