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 Object
implements IScript

A top level container for a number of script tokens.

Since:

0.2.9

Author:

Howard Lewis Ship

Constructor Summary

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

Method Summary

void	addToken(IScriptToken token) Invoked during parsing to add the token parameter as a child of this token.
protected Object	evaluate(String expression, ScriptSession session) Evaluates the expression against the session's symbols, using ExpressionEvaluator.read(Object, String) and returns the result.
protected boolean	evaluateBoolean(String expression, ScriptSession session) Evaluates an expression and coerces the result to a boolean.
void	execute(IComponent target, IRequestCycle cycle, IScriptProcessor processor, Map symbols) Executes the script, which will read and modify the symbols Map.
void	execute(IRequestCycle cycle, IScriptProcessor processor, 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(StringBuffer buffer, ScriptSession session) Does nothing; never invoked.
protected void	writeChildren(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,
                    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, IComponent)

execute

public void execute(IComponent target,
                    IRequestCycle cycle,
                    IScriptProcessor processor,
                    Map symbols)

Executes the script, which will read and modify the symbols Map. The script works with the IScriptProcessor to get the generated JavaScript included on the page.

Specified by:

execute in interface IScript

Parameters:

target - The component this script is being executed by/for

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, IComponent)

write

public void write(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(StringBuffer buffer,
                             ScriptSession session)

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

evaluate

protected Object evaluate(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(String expression,
                                  ScriptSession session)

Evaluates an expression and coerces the result to a boolean.

Since:

4.0