org.apache.commons.ognl
Class ExpressionNode

java.lang.Object
  org.apache.commons.ognl.SimpleNode
      org.apache.commons.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

ExpressionNode

public ExpressionNode(int i)

ExpressionNode

public ExpressionNode(OgnlParser p,
                      int i)

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)

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.