| javax.el.MethodExpression
 de.odysseus.el.TreeMethodExpression
| Method Summary | |
| public void | dump(PrintWriter writer)
Print the parse tree. | | public boolean | equals(Object obj)
Expressions are compared using the concept of a structural id:
variable and function names are anonymized such that two expressions with
same tree structure will also have the same structural id and vice versa. | | public String | getExpressionString()
| | public MethodInfo | getMethodInfo(ELContext context)
Evaluates the expression and answers information about the method
Parameters:
context - used to resolve properties (base.property and base[property]) method information or null for literal expressions
throws:
ELException - if evaluation fails (e.g. | | public int | hashCode()
| | public Object | invoke(ELContext context, Object[] paramValues)
Evaluates the expression and invokes the method.
Parameters:
context - used to resolve properties (base.property and base[property]) method result or null if this is a literal text expression
throws:
ELException - if evaluation fails (e.g. | | public boolean | isDeferred()
| | public boolean | isLiteralText()
| | public String | toString()
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| TreeMethodExpression | | public TreeMethodExpression(TreeStore store, FunctionMapper functions, VariableMapper variables, String expr, Class returnType, Class[] paramTypes)(Code) | | Create a new method expression.
The expression must be an lvalue expression or literal text.
The expected return type may be null, meaning "don't care".
If it is an lvalue expression, the parameter types must not be null.
If it is literal text, the expected return type must not be void.
Parameters:
store - used to get the parse tree from.
Parameters:
functions - the function mapper used to bind functions
Parameters:
variables - the variable mapper used to bind variables
Parameters:
expr - the expression string
Parameters:
returnType - the expected return type (may be null)
Parameters:
paramTypes - the expected parameter types (must not be null for lvalues) |
| dump | | public void dump(PrintWriter writer)(Code) | | Print the parse tree.
Parameters:
writer - |
| equals | | public boolean equals(Object obj)(Code) | | Expressions are compared using the concept of a structural id:
variable and function names are anonymized such that two expressions with
same tree structure will also have the same structural id and vice versa.
Two method expressions are equal if
- their builders are equal
- their structural id's are equal
- their bindings are equal
- their expected types match (see below)
- their parameter types are equal (no-text method expressions only)
For text method expressions, the two expected types match if both types are the
same or one of them is null and the other is Object.class.
For non-text method expressions, the expected types match if both types are the same
or one of them is null.
|
| getExpressionString | | public String getExpressionString()(Code) | | |
| getMethodInfo | | public MethodInfo getMethodInfo(ELContext context) throws ELException(Code) | | Evaluates the expression and answers information about the method
Parameters:
context - used to resolve properties (base.property and base[property]) method information or null for literal expressions
throws:
ELException - if evaluation fails (e.g. suitable method not found) |
| hashCode | | public int hashCode()(Code) | | |
| invoke | | public Object invoke(ELContext context, Object[] paramValues) throws ELException(Code) | | Evaluates the expression and invokes the method.
Parameters:
context - used to resolve properties (base.property and base[property]) method result or null if this is a literal text expression
throws:
ELException - if evaluation fails (e.g. suitable method not found) |
| isDeferred | | public boolean isDeferred()(Code) | | Answer true if this is a deferred expression (starting with #{)
|
| isLiteralText | | public boolean isLiteralText()(Code) | | true if this is a literal text expression |
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