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## org.eclipse.birt.core.script
Class ScriptContext

    java.lang.Object
      org.eclipse.birt.core.script.ScriptContext

    public class ScriptContext

extends java.lang.Object

Wraps around the Rhino Script context

Field Summary
`protected java.util.Map<java.lang.String,org.mozilla.javascript.Script>` | `compiledScripts` a cache storing compiled script
`protected org.mozilla.javascript.Context` | `context` the JavaScript Context
`protected org.mozilla.javascript.ImporterTopLevel` | `global`
`protected static java.util.logging.Logger` | `logger` for logging
`protected org.mozilla.javascript.NativeObject` | `params` for BIRT globel varible "params"
`protected org.mozilla.javascript.Scriptable` | `scope` The JavaScript scope used for script execution
`protected java.util.HashMap<java.lang.String,ScriptExpression>` | `scriptExpressionCache` a cache storing ScriptExpression
`protected org.mozilla.javascript.Scriptable` | `sharedScope`

Constructor Summary
`ScriptContext()` constructor
`ScriptContext(org.mozilla.javascript.ScriptableObject root)`

Method Summary
`org.mozilla.javascript.Scriptable` | `enterScope()` creates a new scripting scope
`org.mozilla.javascript.Scriptable` | `enterScope(org.mozilla.javascript.Scriptable newScope)` Use a new scope in the script context.
`java.lang.Object` | `eval(ScriptExpression expr)` evaluates a script
`java.lang.Object` | `eval(java.lang.String source)` evaluates a script
`java.lang.Object` | `eval(java.lang.String source, org.mozilla.javascript.Scriptable scope)` Evaluates a String with given scope.
`void` | `exit()` exit the scripting context
`void` | `exitScope()` exits from the current scripting scope.
`org.mozilla.javascript.Context` | `getContext()`
`org.mozilla.javascript.Scriptable` | `getRootScope()`
`org.mozilla.javascript.Scriptable` | `getScope()`
`org.mozilla.javascript.Scriptable` | `getSharedScope()`
`java.lang.Object` | `javaToJs(java.lang.Object value)`
`java.lang.Object` | `jsToJava(java.lang.Object jsValue)` converts a JS object to a Java object
`java.lang.Object` | `lookupBean(java.lang.String name)` checks if a property is available in the scope
`void` | `registerBean(java.lang.String name, java.lang.Object value)`
`static void` | `registerInitializer(IJavascriptInitializer initializer)` Deprecated. BIRT 1.0.1
`static void` | `registerWrapper(IJavascriptWrapper wrapper)` Deprecated. BIRT 1.0.1
`void` | `setApplicationClassLoader(java.lang.ClassLoader appLoader)`
`void` | `setCompiledScripts(java.util.Map<java.lang.String,org.mozilla.javascript.Script> compiledScripts)`
`static void` | `unregisterInitializer(IJavascriptInitializer initializer)` Deprecated. BIRT 1.0.1
`static void` | `unregisterWrapper(IJavascriptWrapper wrapper)` Deprecated. BIRT 1.0.1

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### logger

    protected static java.util.logging.Logger logger

  for logging

### context

    protected org.mozilla.javascript.Context context

  the JavaScript Context

### global

    protected org.mozilla.javascript.ImporterTopLevel global

### sharedScope

    protected org.mozilla.javascript.Scriptable sharedScope

### scope

    protected org.mozilla.javascript.Scriptable scope

  The JavaScript scope used for script execution

### compiledScripts

    protected java.util.Map<java.lang.String,org.mozilla.javascript.Script> compiledScripts

  a cache storing compiled script

### scriptExpressionCache

    protected java.util.HashMap<java.lang.String,ScriptExpression> scriptExpressionCache

  a cache storing ScriptExpression

### params

    protected org.mozilla.javascript.NativeObject params

  for BIRT globel varible "params"

Constructor Detail

### ScriptContext

    public ScriptContext()

  constructor

### ScriptContext

    public ScriptContext(org.mozilla.javascript.ScriptableObject root)

Method Detail

### setCompiledScripts

    public void setCompiledScripts(java.util.Map<java.lang.String,org.mozilla.javascript.Script> compiledScripts)

### registerBean

    public void registerBean(java.lang.String name,
                             java.lang.Object value)

  Parameters:
    `name` - the name of a property
    `value` - the value of a property

### exit

    public void exit()

  exit the scripting context

### enterScope

    public org.mozilla.javascript.Scriptable enterScope()

  creates a new scripting scope

### enterScope

    public org.mozilla.javascript.Scriptable enterScope(org.mozilla.javascript.Scriptable newScope)

  Use a new scope in the script context. The following script is evaluated in the new scope. You must call exitScope to return to the parent scope. The new scope is created automatically if the newScope is null.

  Parameters:
    `newScope,` - scope used for following evaluation. null means create a scope automatically.
  Returns:
    the scope used for following evaluation.

### exitScope

    public void exitScope()

  exits from the current scripting scope. Must couple with the enterScope.

### getScope

    public org.mozilla.javascript.Scriptable getScope()

  Returns:
    the current scope

### getSharedScope

    public org.mozilla.javascript.Scriptable getSharedScope()

### getRootScope

    public org.mozilla.javascript.Scriptable getRootScope()

### getContext

    public org.mozilla.javascript.Context getContext()

### lookupBean

    public java.lang.Object lookupBean(java.lang.String name)

  checks if a property is available in the scope

  Parameters:
    `name` -
  Returns:

### eval

    public java.lang.Object eval(java.lang.String source)
                          throws BirtException

  evaluates a script

  Parameters:
    `source` - script to be evaluated
  Returns:
    the evaluated value
  Throws:
    `BirtException`

### eval

    public java.lang.Object eval(java.lang.String source,
                                 org.mozilla.javascript.Scriptable scope)
                          throws BirtException

  Evaluates a String with given scope.

  Parameters:
    `source` -
    `scope` -
  Returns:
  Throws:
    `BirtException`

### eval

    public java.lang.Object eval(ScriptExpression expr)
                          throws BirtException

  evaluates a script

  Throws:
    `BirtException`

### jsToJava

    public java.lang.Object jsToJava(java.lang.Object jsValue)

  converts a JS object to a Java object

  Parameters:
    `jsValue` - javascript object
  Returns:
    Java object

### javaToJs

    public java.lang.Object javaToJs(java.lang.Object value)

### registerInitializer

    public static void registerInitializer(IJavascriptInitializer initializer)

  Deprecated. BIRT 1.0.1

  register a intializer which is called when construct a new script context. You can't reigster the same initializer more than once, otherwise the initailzier will be called multiple times.

  Parameters:
    `initializer` - initializer.

### unregisterInitializer

    public static void unregisterInitializer(IJavascriptInitializer initializer)

  Deprecated. BIRT 1.0.1

  remove a intialzier.

  Parameters:
    `initializer` - to be removed.

### registerWrapper

    public static void registerWrapper(IJavascriptWrapper wrapper)

  Deprecated. BIRT 1.0.1

  register a wrapper which should be called in WapperFactory.

  Parameters:
    `wrapper` - new wrapper.

### unregisterWrapper

    public static void unregisterWrapper(IJavascriptWrapper wrapper)

  Deprecated. BIRT 1.0.1

  remove the wapper.

  Parameters:
    `wrapper` - to be removed.

### setApplicationClassLoader

    public void setApplicationClassLoader(java.lang.ClassLoader appLoader)

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Copyright © 2008 Actuate Corp. All rights reserved.