ognl
Class ExpressionNode

java.lang.Object
  ognl.SimpleNode
      ognl.ExpressionNode

All Implemented Interfaces:

Serializable, JavaSource, Node

Direct Known Subclasses:

BooleanExpression, NumericExpression

public abstract class ExpressionNode
extends SimpleNode

Author:

Luke Blanshard (blanshlu@netscape.net), Drew Davidson (drew@ognl.org)

See Also:

Serialized Form

Field Summary

Fields inherited from class ognl.SimpleNode

_children, _id, _parent, _parser

Constructor Summary

ExpressionNode(int i)

ExpressionNode(OgnlParser p, int i)

Method Summary

String	getExpressionOperator(int index)
boolean	isConstant(OgnlContext context)
boolean	isNodeConstant(OgnlContext context) Returns true iff this node is constant without respect to the children.
boolean	isOperation(OgnlContext context)
String	toGetSourceString(OgnlContext context, Object target) Expected to return a java source representation of itself such that it could be turned into a literal java expression to be compiled and executed for ExpressionAccessor.get(OgnlContext, Object) calls.
String	toSetSourceString(OgnlContext context, Object target) Expected to return a java source representation of itself such that it could be turned into a literal java expression to be compiled and executed for ExpressionAccessor.get(OgnlContext, Object) calls.
String	toString()

Methods inherited from class ognl.SimpleNode

dump, evaluateGetValueBody, evaluateSetValueBody, flattenTree, getAccessor, getIndexInParent, getNextSibling, getValue, getValueBody, isChain, isEvalChain, isNodeSimpleProperty, isSequence, isSimpleMethod, isSimpleNavigationChain, isSimpleProperty, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, lastChild, setAccessor, setValue, setValueBody, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionNode

public ExpressionNode(int i)

ExpressionNode

public ExpressionNode(OgnlParser p,
                      int i)

Method Detail

isNodeConstant

public boolean isNodeConstant(OgnlContext context)
                       throws OgnlException

Returns true iff this node is constant without respect to the children.

Overrides:

isNodeConstant in class SimpleNode

Throws:

OgnlException

isConstant

public boolean isConstant(OgnlContext context)
                   throws OgnlException

Overrides:

isConstant in class SimpleNode

Throws:

OgnlException

getExpressionOperator

public String getExpressionOperator(int index)

toString

public String toString()

Overrides:

toString in class SimpleNode

toGetSourceString

public String toGetSourceString(OgnlContext context,
                                Object target)

Description copied from interface: JavaSource

Expected to return a java source representation of itself such that it could be turned into a literal java expression to be compiled and executed for ExpressionAccessor.get(OgnlContext, Object) calls.

Specified by:

toGetSourceString in interface JavaSource

Overrides:

toGetSourceString in class SimpleNode

Returns:

Literal java string representation of an object get.

toSetSourceString

public String toSetSourceString(OgnlContext context,
                                Object target)

Description copied from interface: JavaSource

Expected to return a java source representation of itself such that it could be turned into a literal java expression to be compiled and executed for ExpressionAccessor.get(OgnlContext, Object) calls.

Specified by:

toSetSourceString in interface JavaSource

Overrides:

toSetSourceString in class SimpleNode

Returns:

Literal java string representation of an object get.

isOperation

public boolean isOperation(OgnlContext context)
                    throws OgnlException

Overrides:

isOperation in class SimpleNode

Throws:

OgnlException