org.hibernate.hql.ast.tree
Class AbstractNullnessCheckNode

java.lang.Object
  antlr.BaseAST
      antlr.CommonAST
          org.hibernate.hql.ast.tree.Node
              org.hibernate.hql.ast.tree.SqlNode
                  org.hibernate.hql.ast.tree.HqlSqlWalkerNode
                      org.hibernate.hql.ast.tree.UnaryLogicOperatorNode
                          org.hibernate.hql.ast.tree.AbstractNullnessCheckNode

All Implemented Interfaces:

antlr.collections.AST, Serializable, InitializeableNode, OperatorNode, UnaryOperatorNode

Direct Known Subclasses:

IsNotNullLogicOperatorNode, IsNullLogicOperatorNode

public abstract class AbstractNullnessCheckNode
extends UnaryLogicOperatorNode

Base class for nodes dealing 'is null' and 'is not null' operators.

todo : a good deal of this is copied from BinaryLogicOperatorNode; look at consolidating these code fragments

Author:

Steve Ebersole

See Also:

Serialized Form

Field Summary

Fields inherited from class antlr.BaseAST

down, right

Constructor Summary

AbstractNullnessCheckNode()

Method Summary

protected abstract String	getExpansionConnectorText() When (if) we need to expand a row value constructor, what is the text of the connector to use between the expansion fragments.
protected abstract int	getExpansionConnectorType() When (if) we need to expand a row value constructor, what is the type of connector to use between the expansion fragments.
void	initialize() Called by the tree walker during hql-sql semantic analysis after the operator sub-tree is completely built.

Methods inherited from class org.hibernate.hql.ast.tree.UnaryLogicOperatorNode

getDataType, getOperand

Methods inherited from class org.hibernate.hql.ast.tree.HqlSqlWalkerNode

getAliasGenerator, getASTFactory, getSessionFactoryHelper, getWalker, initialize

Methods inherited from class org.hibernate.hql.ast.tree.SqlNode

getOriginalText, setDataType, setText

Methods inherited from class org.hibernate.hql.ast.tree.Node

getColumn, getFilename, getLine, getRenderText, getTextLength, initialize, initialize

Methods inherited from class antlr.CommonAST

getText, getType, initialize, setType

Methods inherited from class antlr.BaseAST

addChild, decode, encode, equals, equalsList, equalsListPartial, equalsTree, equalsTreePartial, findAll, findAllPartial, getFirstChild, getNextSibling, getNumberOfChildren, getTokenNames, removeChildren, setFirstChild, setNextSibling, setVerboseStringConversion, toString, toStringList, toStringTree, xmlSerialize, xmlSerializeNode, xmlSerializeRootClose, xmlSerializeRootOpen

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractNullnessCheckNode

public AbstractNullnessCheckNode()

Method Detail

initialize

public void initialize()

Called by the tree walker during hql-sql semantic analysis after the operator sub-tree is completely built.

Specified by:

initialize in interface OperatorNode

Overrides:

initialize in class UnaryLogicOperatorNode

getExpansionConnectorType

protected abstract int getExpansionConnectorType()

When (if) we need to expand a row value constructor, what is the type of connector to use between the expansion fragments.

Returns:

The expansion connector type.

getExpansionConnectorText

protected abstract String getExpansionConnectorText()

When (if) we need to expand a row value constructor, what is the text of the connector to use between the expansion fragments.

Returns:

The expansion connector text.