CompiledScript (Java Platform SE 6) (original) (raw)
javax.script
Class CompiledScript
java.lang.Object
javax.script.CompiledScript
public abstract class CompiledScript
extends Object
Extended by classes that store results of compilations. State might be stored in the form of Java classes, Java class files or scripting language opcodes. The script may be executed repeatedly without reparsing.
Each CompiledScript is associated with a ScriptEngine -- A call to an eval method of the CompiledScript causes the execution of the script by theScriptEngine. Changes in the state of the ScriptEngine caused by execution of tne CompiledScript may visible during subsequent executions of scripts by the engine.
Since:
1.6
| Constructor Summary |
|---|
| CompiledScript() |
| Method Summary | |
|---|---|
| Object | eval() Executes the program stored in the CompiledScript object. |
| Object | eval(Bindings bindings) Executes the program stored in the CompiledScript object using the supplied Bindings of attributes as the ENGINE_SCOPE of the associated ScriptEngine during script execution. |
| abstract Object | eval(ScriptContext context) Executes the program stored in this CompiledScript object. |
| abstract ScriptEngine | getEngine() Returns the ScriptEngine wbose compile method created this CompiledScript. |
| Methods inherited from class java.lang.Object |
|---|
| clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, [wait](../../java/lang/Object.html#wait%28long, int%29) |
| Constructor Detail |
|---|
CompiledScript
public CompiledScript()
| Method Detail |
|---|
eval
public abstract Object eval(ScriptContext context) throws ScriptException
Executes the program stored in this CompiledScript object.
Parameters:
context - A ScriptContext that is used in the same way as the ScriptContext passed to the eval methods ofScriptEngine.
Returns:
The value returned by the script execution, if any. Should return null if no value is returned by the script execution.
Throws:
[ScriptException](../../javax/script/ScriptException.html "class in javax.script") - if an error occurs.
[NullPointerException](../../java/lang/NullPointerException.html "class in java.lang") - if context is null.
eval
public Object eval(Bindings bindings) throws ScriptException
Executes the program stored in the CompiledScript object using the supplied Bindings of attributes as the ENGINE_SCOPE of the associated ScriptEngine during script execution. If bindings is null, then the effect of calling this method is same as that of eval(getEngine().getContext()).
. The GLOBAL_SCOPE Bindings, Reader and Writer associated with the default ScriptContext of the associated ScriptEngine are used.
Parameters:
bindings - The bindings of attributes used for the ENGINE_SCOPE.
Returns:
The return value from the script execution
Throws:
[ScriptException](../../javax/script/ScriptException.html "class in javax.script") - if an error occurs.
eval
public Object eval() throws ScriptException
Executes the program stored in the CompiledScript object. The default ScriptContext of the associated ScriptEngine is used. The effect of calling this method is same as that of eval(getEngine().getContext()).
Returns:
The return value from the script execution
Throws:
[ScriptException](../../javax/script/ScriptException.html "class in javax.script") - if an error occurs.
getEngine
public abstract ScriptEngine getEngine()
Returns the ScriptEngine wbose compile method created this CompiledScript. The CompiledScript will execute in this engine.
Returns:
The ScriptEngine that created this CompiledScript
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For further API reference and developer documentation, see Java SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
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