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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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java.lang.Objectcom.tangosol.util.Base
com.tangosol.util.processor.AbstractProcessor
com.tangosol.util.processor.VersionedPut
public class VersionedPut
VersionedPut is an EntryProcessor that assumes that entry values implement
Versionable
interface and performs an
Entry.setValue
operation if and only if the version of the specified value
matches to the version of the current value. In case of the match, the
VersionedPut will increment the version indicator before the value is
updated.
ConditionalPut
Field Summary | |
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protected boolean |
m_fInsert
Specifies whether or not an insert is allowed. |
protected boolean |
m_fReturn
Specifies whether or not a return value is required. |
protected Versionable |
m_oValue
Specifies the new value to update an entry with. |
Constructor Summary | |
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VersionedPut()
Default constructor (necessary for the ExternalizableLite interface). |
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VersionedPut(Versionable oValue)
Construct a VersionedPut that updates an entry with a new value if and only if the version of the new value matches to the version of the current entry's value (which must exist). |
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VersionedPut(Versionable oValue,
boolean fAllowInsert,
boolean fReturn)
Construct a VersionedPut that updates an entry with a new value if and only if the version of the new value matches to the version of the current entry's value. |
Method Summary | |
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boolean |
equals(Object o)
Compare the VersionedPut with another object to determine equality. |
int |
hashCode()
Determine a hash value for the VersionedPut object according to the general Object.hashCode() contract. |
Object |
process(InvocableMap.Entry entry)
Process a Map.Entry object. |
void |
readExternal(DataInput in)
Restore the contents of this object by loading the object's state from the passed DataInput object. |
void |
readExternal(PofReader in)
Restore the contents of a user type instance by reading its state using the specified PofReader object. |
String |
toString()
Return a human-readable description for this VersionedPut. |
void |
writeExternal(DataOutput out)
Save the contents of this object by storing the object's state into the passed DataOutput object. |
void |
writeExternal(PofWriter out)
Save the contents of a POF user type instance by writing its state using the specified PofWriter object. |
Methods inherited from class com.tangosol.util.processor.AbstractProcessor |
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processAll |
Field Detail |
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protected Versionable m_oValue
protected boolean m_fInsert
protected boolean m_fReturn
Constructor Detail |
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public VersionedPut()
public VersionedPut(Versionable oValue)
process(com.tangosol.util.InvocableMap.Entry)
invocation does not return any
result.
oValue
- a Versionable value to update an entry withpublic VersionedPut(Versionable oValue, boolean fAllowInsert, boolean fReturn)
oValue
- a value to update an entry withfAllowInsert
- specifies whether or not an insert should be
allowed (no currently existing value)fReturn
- specifies whether or not the processor should
return the current value in case it has not been
updatedMethod Detail |
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public Object process(InvocableMap.Entry entry)
process
in interface InvocableMap.EntryProcessor
entry
- the Entry to process
public boolean equals(Object o)
public int hashCode()
Object.hashCode()
contract.
public String toString()
public void readExternal(DataInput in) throws IOException
readExternal
in interface ExternalizableLite
in
- the DataInput stream to read data from in order to restore
the state of this object
IOException
- if an I/O exception occurs
NotActiveException
- if the object is not in its initial
state, and therefore cannot be deserialized intopublic void writeExternal(DataOutput out) throws IOException
writeExternal
in interface ExternalizableLite
out
- the DataOutput stream to write the state of this object to
IOException
- if an I/O exception occurspublic void readExternal(PofReader in) throws IOException
readExternal
in interface PortableObject
in
- the PofReader from which to read the object's state
IOException
- if an I/O error occurspublic void writeExternal(PofWriter out) throws IOException
writeExternal
in interface PortableObject
out
- the PofWriter to which to write the object's state
IOException
- if an I/O error occurs
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CoherenceTM v3.3 Copyright© 2000-2007 by Oracle Corporation |
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