org.openspaces.jpa.openjpa.query
Class NullValueNode

java.lang.Object
  org.openspaces.jpa.openjpa.query.NullValueNode

All Implemented Interfaces:

Serializable, org.apache.openjpa.kernel.exps.Value, ExpressionNode

public class NullValueNode
extends Object
implements org.apache.openjpa.kernel.exps.Value, ExpressionNode

Represents a NULL value node in the translated query expression tree.

Since:

8.0

Author:

idan

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface org.openspaces.jpa.openjpa.query.ExpressionNode

ExpressionNode.NodeType

Constructor Summary

NullValueNode()

Method Summary

void	acceptVisit(org.apache.openjpa.kernel.exps.ExpressionVisitor visitor)
void	appendSql(StringBuilder sql) Appends the node SQL string to the string builder.
String	getAlias()
org.apache.openjpa.meta.ClassMetaData	getMetaData()
String	getName()
ExpressionNode.NodeType	getNodeType() Gets the node type
org.apache.openjpa.kernel.exps.Path	getPath()
org.apache.openjpa.kernel.exps.Value	getSelectAs()
Class	getType()
boolean	isAggregate()
boolean	isVariable()
boolean	isXPath()
void	setAlias(String alias)
void	setImplicitType(Class cls)
void	setMetaData(org.apache.openjpa.meta.ClassMetaData cmd)
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

NullValueNode

public NullValueNode()

Method Detail

toString

public String toString()

Overrides:

toString in class Object

acceptVisit

public void acceptVisit(org.apache.openjpa.kernel.exps.ExpressionVisitor visitor)

Specified by:

acceptVisit in interface org.apache.openjpa.kernel.exps.Value

getAlias

public String getAlias()

Specified by:

getAlias in interface org.apache.openjpa.kernel.exps.Value

getMetaData

public org.apache.openjpa.meta.ClassMetaData getMetaData()

Specified by:

getMetaData in interface org.apache.openjpa.kernel.exps.Value

getName

public String getName()

Specified by:

getName in interface org.apache.openjpa.kernel.exps.Value

getPath

public org.apache.openjpa.kernel.exps.Path getPath()

Specified by:

getPath in interface org.apache.openjpa.kernel.exps.Value

getSelectAs

public org.apache.openjpa.kernel.exps.Value getSelectAs()

Specified by:

getSelectAs in interface org.apache.openjpa.kernel.exps.Value

getType

public Class getType()

Specified by:

getType in interface org.apache.openjpa.kernel.exps.Value

isAggregate

public boolean isAggregate()

Specified by:

isAggregate in interface org.apache.openjpa.kernel.exps.Value

isVariable

public boolean isVariable()

Specified by:

isVariable in interface org.apache.openjpa.kernel.exps.Value

isXPath

public boolean isXPath()

Specified by:

isXPath in interface org.apache.openjpa.kernel.exps.Value

setAlias

public void setAlias(String alias)

Specified by:

setAlias in interface org.apache.openjpa.kernel.exps.Value

setImplicitType

public void setImplicitType(Class cls)

Specified by:

setImplicitType in interface org.apache.openjpa.kernel.exps.Value

setMetaData

public void setMetaData(org.apache.openjpa.meta.ClassMetaData cmd)

Specified by:

setMetaData in interface org.apache.openjpa.kernel.exps.Value

appendSql

public void appendSql(StringBuilder sql)

Description copied from interface: ExpressionNode

Appends the node SQL string to the string builder.

Specified by:

appendSql in interface ExpressionNode

Parameters:

sql - The SQL string builder to append to.

getNodeType

public ExpressionNode.NodeType getNodeType()

Description copied from interface: ExpressionNode

Gets the node type

Specified by:

getNodeType in interface ExpressionNode

Returns:

The node type.