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java.lang.Objectorg.apache.commons.jexl2.ExpressionImpl
public class ExpressionImpl
Instances of ExpressionImpl are created by the JexlEngine,
and this is the default implementation of the Expression and
Script interface.
| Field Summary | |
|---|---|
protected String |
expression
Original expression stripped from leading & trailing spaces. |
protected JexlEngine |
jexl
The engine for this expression. |
protected ASTJexlScript |
script
The resulting AST we can interpret. |
| Constructor Summary | |
|---|---|
protected |
ExpressionImpl(JexlEngine engine,
String expr,
ASTJexlScript ref)
Do not let this be generally instantiated with a 'new'. |
| Method Summary | |
|---|---|
Callable<Object> |
callable(JexlContext context)
Creates a Callable from this script. |
Callable<Object> |
callable(JexlContext context,
Object... args)
Creates a Callable from this script. |
String |
dump()
Returns the JEXL expression by reconstructing it from the parsed tree. |
Object |
evaluate(JexlContext context)
Evaluates the expression with the variables contained in the supplied JexlContext. |
Object |
execute(JexlContext context)
Executes the script with the variables contained in the supplied JexlContext. |
Object |
execute(JexlContext context,
Object... args)
Executes the script with the variables contained in the supplied JexlContext and a set of arguments corresponding to the
parameters used during parsing. |
String |
getExpression()
Returns the JEXL expression this Expression was created with. |
String[] |
getLocalVariables()
Gets this script local variables. |
String[] |
getParameters()
Gets this script parameters. |
String |
getText()
Returns the text of this Script. |
Set<List<String>> |
getVariables()
Gets this script variables. |
String |
toString()
Provide a string representation of this expression. |
| Methods inherited from class java.lang.Object |
|---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
| Field Detail |
|---|
protected final JexlEngine jexl
protected final String expression
protected final ASTJexlScript script
| Constructor Detail |
|---|
protected ExpressionImpl(JexlEngine engine,
String expr,
ASTJexlScript ref)
engine - the interpreter to evaluate the expressionexpr - the expression.ref - the parsed expression.| Method Detail |
|---|
public Object evaluate(JexlContext context)
JexlContext.
evaluate in interface Expressioncontext - A JexlContext containing variables.
public String dump()
dump in interface Expressionpublic String getExpression()
getExpression in interface Expressionpublic String toString()
toString in class Objectpublic String getText()
getText in interface Scriptpublic Object execute(JexlContext context)
JexlContext.
execute in interface Scriptcontext - A JexlContext containing variables.
public Object execute(JexlContext context,
Object... args)
JexlContext and a set of arguments corresponding to the
parameters used during parsing.
execute in interface Scriptcontext - A JexlContext containing variables.args - the arguments
public String[] getParameters()
getParameters in interface Scriptpublic String[] getLocalVariables()
getLocalVariables in interface Scriptpublic Set<List<String>> getVariables()
Note that since variables can be in an ant-ish form (ie foo.bar.quux), each variable is returned as a list of strings where each entry is a fragment of the variable ({"foo", "bar", "quux"} in the example.
getVariables in interface Scriptpublic Callable<Object> callable(JexlContext context)
This allows to submit it to an executor pool and provides support for asynchronous calls.
The interpreter will handle interruption/cancellation gracefully if needed.
callable in interface Scriptcontext - the context
public Callable<Object> callable(JexlContext context,
Object... args)
This allows to submit it to an executor pool and provides support for asynchronous calls.
The interpreter will handle interruption/cancellation gracefully if needed.
callable in interface Scriptcontext - the contextargs - the script arguments
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