org.apache.tapestry.script

Class ParsedScript

java.lang.Object

org.apache.tapestry.script.ParsedScript

All Implemented Interfaces:

org.apache.hivemind.Locatable, IScript, IScriptToken

public class ParsedScript
extends java.lang.Object
implements IScript

A top level container for a number of script tokens.

Since:

0.2.9

Author:

Howard Lewis Ship

Constructor Summary

Constructors

Constructor and Description
ParsedScript(ExpressionEvaluator evaluator, ValueConverter valueConverter, org.apache.hivemind.Location location)

Method Summary

Methods

Modifier and Type	Method and Description
void	addToken(IScriptToken token) Invoked during parsing to add the token parameter as a child of this token.
protected java.lang.Object	evaluate(java.lang.String expression, ScriptSession session) Evaluates the expression against the session's symbols, using ExpressionEvaluator#read(Object, String)and returns the result.
protected boolean	evaluateBoolean(java.lang.String expression, ScriptSession session) Evaluates an expression and coerces the result to a boolean.
void	execute(IRequestCycle cycle, IScriptProcessor processor, java.util.Map symbols) Creates the ScriptSessionImpland invokes AbstractToken.writeChildren(java.lang.StringBuffer, org.apache.tapestry.script.ScriptSession).
org.apache.hivemind.Location	getLocation()
org.apache.hivemind.Resource	getScriptResource() Returns the location from which the script was loaded.
void	write(java.lang.StringBuffer buffer, ScriptSession session) Does nothing; never invoked.
protected void	writeChildren(java.lang.StringBuffer buffer, ScriptSession session) Invokes IScriptToken.write(StringBuffer,ScriptSession)on each child token (if there are any).

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ParsedScript

public ParsedScript(ExpressionEvaluator evaluator,
            ValueConverter valueConverter,
            org.apache.hivemind.Location location)

Method Detail

getScriptResource

public org.apache.hivemind.Resource getScriptResource()

Description copied from interface: IScript

Returns the location from which the script was loaded.

Specified by:

getScriptResource in interface IScript

execute

public void execute(IRequestCycle cycle,
           IScriptProcessor processor,
           java.util.Map symbols)

Creates the ScriptSessionImpland invokes AbstractToken.writeChildren(java.lang.StringBuffer, org.apache.tapestry.script.ScriptSession).

Specified by:

execute in interface IScript

Parameters:

cycle - the current request cycle

processor - an object that processes the results of the script, typically an instance of Body

symbols - Map of input symbols; execution of the script may modify the map, creating new output symbols

See Also:

TapestryUtils#getPageRenderSupport(IRequestCycle, Object)

write

public void write(java.lang.StringBuffer buffer,
         ScriptSession session)

Does nothing; never invoked.

Specified by:

write in interface IScriptToken

getLocation

public org.apache.hivemind.Location getLocation()

Specified by:

getLocation in interface org.apache.hivemind.Locatable

addToken

public void addToken(IScriptToken token)

Description copied from interface: IScriptToken

Invoked during parsing to add the token parameter as a child of this token.

Specified by:

addToken in interface IScriptToken

writeChildren

protected void writeChildren(java.lang.StringBuffer buffer,
                 ScriptSession session)

Invokes IScriptToken.write(StringBuffer,ScriptSession)on each child token (if there are any).

evaluate

protected java.lang.Object evaluate(java.lang.String expression,
                        ScriptSession session)

Evaluates the expression against the session's symbols, using ExpressionEvaluator#read(Object, String)and returns the result.

evaluateBoolean

protected boolean evaluateBoolean(java.lang.String expression,
                      ScriptSession session)

Evaluates an expression and coerces the result to a boolean.

Since:

4.0