ognl

Class ASTVarRef

java.lang.Object

ognl.SimpleNode

ognl.ASTVarRef

All Implemented Interfaces:

Serializable, OrderedReturn, JavaSource, Node, NodeType

Direct Known Subclasses:

ASTRootVarRef, ASTThisVarRef

public class ASTVarRef
extends SimpleNode
implements NodeType, OrderedReturn

Author:

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

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected String	_core
protected Class	_getterClass
protected String	_last

Fields inherited from class ognl.SimpleNode

_children, _id, _parent, _parser

Constructor Summary

Constructors

Constructor and Description
ASTVarRef(int id)
ASTVarRef(OgnlParser p, int id)

Method Summary

Methods

Modifier and Type	Method and Description
String	getCoreExpression() Get the core expression to execute first before any return foo logic is started.
Class	getGetterClass() The type returned from the expression - if any.
String	getLastExpression() Gets the last expression to be pre-pended with a return <expression> block.
Class	getSetterClass() The type used to set the value - if any.
protected Object	getValueBody(OgnlContext context, Object source) Subclasses implement this method to do the actual work of extracting the appropriate value from the source object.
protected void	setValueBody(OgnlContext context, Object target, Object value) Subclasses implement this method to do the actual work of setting the appropriate value in the target object.
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, isChain, isConstant, isEvalChain, isNodeConstant, isNodeSimpleProperty, isOperation, isSequence, isSimpleMethod, isSimpleNavigationChain, isSimpleProperty, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, lastChild, setAccessor, setValue, toString

Methods inherited from class java.lang.Object

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

Field Detail

_getterClass

protected Class _getterClass

_core

protected String _core

_last

protected String _last

Constructor Detail

ASTVarRef

public ASTVarRef(int id)

ASTVarRef

public ASTVarRef(OgnlParser p,
         int id)

Method Detail

getValueBody

protected Object getValueBody(OgnlContext context,
                  Object source)
                       throws OgnlException

Description copied from class: SimpleNode

Subclasses implement this method to do the actual work of extracting the appropriate value from the source object.

Specified by:

getValueBody in class SimpleNode

Parameters:

context - the OgnlContext within which to perform the operation.

source - the Object from which to get the value body.

Returns:

the value body from the source (as appropriate within the provided context).

Throws:

OgnlException - if the value body get fails.

setValueBody

protected void setValueBody(OgnlContext context,
                Object target,
                Object value)
                     throws OgnlException

Description copied from class: SimpleNode

Subclasses implement this method to do the actual work of setting the appropriate value in the target object. The default implementation throws an InappropriateExpressionException, meaning that it cannot be a set expression.

Overrides:

setValueBody in class SimpleNode

Parameters:

context - the OgnlContext within which to perform the operation.

target - the Object upon which to set the value body.

value - the Object representing the value body to apply to the target.

Throws:

OgnlException - if the value body set fails.

getGetterClass

public Class getGetterClass()

Description copied from interface: NodeType

The type returned from the expression - if any.

Specified by:

getGetterClass in interface NodeType

Returns:

The type.

getSetterClass

public Class getSetterClass()

Description copied from interface: NodeType

The type used to set the value - if any.

Specified by:

getSetterClass in interface NodeType

Returns:

The type.

getCoreExpression

public String getCoreExpression()

Description copied from interface: OrderedReturn

Get the core expression to execute first before any return foo logic is started.

Specified by:

getCoreExpression in interface OrderedReturn

Returns:

The core standalone expression that shouldn't be pre-pended with a return keyword.

getLastExpression

public String getLastExpression()

Description copied from interface: OrderedReturn

Gets the last expression to be pre-pended with a return <expression> block.

Specified by:

getLastExpression in interface OrderedReturn

Returns:

The expression representing the return portion of a statement;

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

Parameters:

context - the OgnlContext within which to perform the operation.

target - the Object from which to retrieve the get source string.

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

Parameters:

context - the OgnlContext within which to perform the operation.

target - the Object from which to retrieve the set source string.

Returns:

Literal java string representation of an object set.