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Oracle® OLAP Java API Reference 11g Release 1 (11.1) B28128-02 |
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java.lang.Object
oracle.olapi.syntax.SyntaxObject
oracle.olapi.syntax.DataObject
oracle.olapi.syntax.Expression
oracle.olapi.syntax.TypedExpression
oracle.olapi.syntax.LiteralExpression
oracle.olapi.syntax.NullExpression
public final class NullExpression
A LiteralExpression
that represents null
. An application gets the instance of NullExpression
by using the static constant NullExpression.INSTANCE
.
Field Summary | |
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static NullExpression |
INSTANCE A constant that represents an instance of this class. |
Method Summary | |
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java.lang.Object |
visit(SyntaxObjectVisitor visitor, java.lang.Object context) Calls the visitNullExpression method of the SyntaxObjectVisitor and passes that method this NullExpression and an Object . |
Methods inherited from class oracle.olapi.syntax.Expression |
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getSource |
Methods inherited from class oracle.olapi.syntax.SyntaxObject |
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fromSyntax, fromSyntax, fromSyntax, fromSyntax, fromSyntax, isValid, toSyntax, toSyntax, toSyntax, toSyntax, toSyntax |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final NullExpression INSTANCE
Method Detail |
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public java.lang.Object visit(SyntaxObjectVisitor visitor, java.lang.Object context)
visitNullExpression
method of the SyntaxObjectVisitor
and passes that method this NullExpression
and an Object
.visit
in class SyntaxObject
visitor
- A SyntaxObjectVisitor
.context
- An Object
.Object
returned by the visitNullExpression
method.
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