Package org.apache.commons.ognl
Class ASTConst
- java.lang.Object
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- org.apache.commons.ognl.SimpleNode
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- org.apache.commons.ognl.ASTConst
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- All Implemented Interfaces:
Serializable
,JavaSource
,Node
,NodeType
public class ASTConst extends SimpleNode implements NodeType
$Id$- See Also:
- Serialized Form
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Field Summary
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Fields inherited from class org.apache.commons.ognl.SimpleNode
children, id, parent, parser
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Constructor Summary
Constructors Constructor Description ASTConst(int id)
ASTConst(OgnlParser p, int id)
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description <R,P>
Raccept(NodeVisitor<? extends R,? super P> visitor, P data)
Supports the Visitor pattern.Class
getGetterClass()
The type returned from the expression - if any.Class
getSetterClass()
The type used to set the value - if any.Object
getValue()
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.boolean
isNodeConstant(OgnlContext context)
Returns true iff this node is constant without respect to the children.void
setValue(Object value)
Called from parser actions.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 forExpressionAccessor.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 forExpressionAccessor.get(OgnlContext, Object)
calls.-
Methods inherited from class org.apache.commons.ognl.SimpleNode
dump, evaluateGetValueBody, evaluateSetValueBody, flattenTree, getAccessor, getIndexInParent, getNextSibling, getValue, isConstant, isEvalChain, isNodeSimpleProperty, isSimpleNavigationChain, isSimpleProperty, jjtAddChild, jjtClose, jjtGetChild, jjtGetNumChildren, jjtGetParent, jjtOpen, jjtSetParent, lastChild, setAccessor, setValue, setValueBody, toString, toString
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Constructor Detail
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ASTConst
public ASTConst(int id)
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ASTConst
public ASTConst(OgnlParser p, int id)
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Method Detail
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setValue
public void setValue(Object value)
Called from parser actions.- Parameters:
value
- the value to set
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getValue
public Object getValue()
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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 classSimpleNode
- Throws:
OgnlException
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isNodeConstant
public boolean isNodeConstant(OgnlContext context) throws OgnlException
Description copied from class:SimpleNode
Returns true iff this node is constant without respect to the children.- Overrides:
isNodeConstant
in classSimpleNode
- Throws:
OgnlException
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getGetterClass
public Class getGetterClass()
Description copied from interface:NodeType
The type returned from the expression - if any.- Specified by:
getGetterClass
in interfaceNodeType
- Returns:
- The type.
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getSetterClass
public Class getSetterClass()
Description copied from interface:NodeType
The type used to set the value - if any.- Specified by:
getSetterClass
in interfaceNodeType
- Returns:
- The type.
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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 forExpressionAccessor.get(OgnlContext, Object)
calls.- Specified by:
toGetSourceString
in interfaceJavaSource
- Overrides:
toGetSourceString
in classSimpleNode
- Returns:
- Literal java string representation of an object get.
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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 forExpressionAccessor.get(OgnlContext, Object)
calls.- Specified by:
toSetSourceString
in interfaceJavaSource
- Overrides:
toSetSourceString
in classSimpleNode
- Returns:
- Literal java string representation of an object get.
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accept
public <R,P> R accept(NodeVisitor<? extends R,? super P> visitor, P data) throws OgnlException
Description copied from interface:Node
Supports the Visitor pattern. The method which corresponds to the runtime type of this Node will be called.- Specified by:
accept
in interfaceNode
- Type Parameters:
R
- The return type of the visitor.visit method.P
- The type of the second parameter type.- Parameters:
visitor
- The visitor to accept.data
- The second parameter to pass through to visitor.visit- Returns:
- the value returned by visitor.visit
- Throws:
OgnlException
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