Class ValueNode

java.lang.Object

com.j_spaces.jdbc.parser.ExpNode

com.j_spaces.jdbc.parser.ValueNode

All Implemented Interfaces:

SmartExternalizable, Externalizable, Serializable, Cloneable

Direct Known Subclasses:

ColumnNode, LiteralNode, RowNumNode

public class ValueNode
extends ExpNode

This is a parent class for the ColumnNode and the LiteralNodes. it represents nodes in the expression tree that have no children

Author:

Michael Mitrani, 2Train4, 2004

See Also:

• Serialized Form

Field Summary

Fields inherited from class ExpNode

leftChild, rightChild, template

Constructor Summary

Constructors

Constructor	Description
ValueNode()

Method Summary

Modifier and Type	Method	Description
void	accept(QueryTemplateBuilder builder)	Accept the query builder Default implementation returns null - no QueryTemplatePacket is defined
void	accept(IQueryExecutor executor, ISpaceProxy space, Transaction txn, int readModifier, int max)	Accept the query executor
Object	clone()	Override the clone method.
boolean	isJoined()	is there somewhere in the tree a join condition.
boolean	isValidCompare(Object ob1, Object ob2)	Operator nodes implement this method to return whether two objects satisfy the given condition.
ExpNode	newInstance()	Prototype method - Create new instance of the class

Methods inherited from class ExpNode

createIndex, createJoinIndex, forEachChild, getLeftChild, getRightChild, getTemplate, isContainsItemNode, isContainsItemsRootNode, isInnerQuery, prepareTemplateValues, prepareValues, readExternal, reverse, setLeftChild, setRightChild, setTemplate, toString, traverse, traverseReverse, validateInnerQueryResult, writeExternal

Methods inherited from class Object

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

Methods inherited from interface SmartExternalizable

enabledSmartExternalizableWithReference

Constructor Details

ValueNode

public ValueNode()

Method Details

isValidCompare

public boolean isValidCompare(Object ob1,
 Object ob2)

Description copied from class: ExpNode

Operator nodes implement this method to return whether two objects satisfy the given condition.

Specified by:

isValidCompare in class ExpNode

Returns:

true if the two given objects satisfy the condition

clone

public Object clone()

Description copied from class: ExpNode

Override the clone method.

Overrides:

clone in class ExpNode

isJoined

public boolean isJoined()

Description copied from class: ExpNode

is there somewhere in the tree a join condition.

Overrides:

isJoined in class ExpNode

newInstance

public ExpNode newInstance()

Description copied from class: ExpNode

Prototype method - Create new instance of the class

Specified by:

newInstance in class ExpNode

accept

public void accept(IQueryExecutor executor,
 ISpaceProxy space,
 Transaction txn,
 int readModifier,
 int max)
            throws SQLException

Description copied from class: ExpNode

Accept the query executor

Overrides:

accept in class ExpNode

Throws:

SQLException

accept

public void accept(QueryTemplateBuilder builder)
            throws SQLException

Description copied from class: ExpNode

Accept the query builder Default implementation returns null - no QueryTemplatePacket is defined

Specified by:

accept in class ExpNode

Throws:

SQLException