jaxx.compiler.binding
Class DataBinding

java.lang.Object
  jaxx.compiler.binding.DataBinding

Direct Known Subclasses:

PseudoClassDataBinding

public class DataBinding
extends java.lang.Object

Represents a data binding in a JAXX file. DataBinding uses DataSource to track changes to a source expression and update the destination.

Field Summary

protected java.lang.String	constantId Constant id build from the realId and used instead of realId in generated code
protected DataSource	dataSource Compiled data source
protected java.lang.String	initDataBinding code to register the databinding (null if no binding)
protected static org.apache.commons.logging.Log	log Logger
protected java.util.List<JavaMethod>	methods Extra method to add to the binding
protected java.lang.String	processDataBinding code to add to processDataBinding (null if no binding)

Constructor Summary

DataBinding(java.lang.String id, java.lang.String source, java.lang.String assignment, boolean quickNoDependencies)
Creates a new data binding.

Method Summary

boolean	compile(JAXXCompiler compiler) Compiles the data binding expression.
java.lang.String	getAssignment()
java.lang.String	getConstantId()
java.lang.String	getInitDataBinding()
protected java.lang.String	getInitDataBindingCode(JAXXCompiler compiler, DataSource dataSource, boolean isBinding)
java.util.List<JavaMethod>	getMethods()
java.lang.String	getProcessDataBinding()
protected java.lang.String	getProcessDataBindingCode(JAXXCompiler compiler, DataSource dataSource, boolean isBinding)
java.lang.String	getRealId()
java.lang.String	getSource()
DataListener[]	getTrackers()
boolean	isQuickNoDependencies()
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.commons.logging.Log log

Logger

constantId

protected java.lang.String constantId

Constant id build from the realId and used instead of realId in generated code

dataSource

protected DataSource dataSource

Compiled data source

processDataBinding

protected java.lang.String processDataBinding

code to add to processDataBinding (null if no binding)

initDataBinding

protected java.lang.String initDataBinding

code to register the databinding (null if no binding)

methods

protected final java.util.List<JavaMethod> methods

Extra method to add to the binding

Constructor Detail

DataBinding

public DataBinding(java.lang.String id,
                   java.lang.String source,
                   java.lang.String assignment,
                   boolean quickNoDependencies)

Creates a new data binding.

Parameters:

id - the data binding destination in the form id.propertyName

source - the Java source code for the data binding expression

assignment - Java snippet which will cause the destination property to be updated with the current value of the binding

quickNoDependencies - internal flag to not treate process databinding in not a real binding

Method Detail

getAssignment

public java.lang.String getAssignment()

getSource

public java.lang.String getSource()

isQuickNoDependencies

public boolean isQuickNoDependencies()

getProcessDataBinding

public java.lang.String getProcessDataBinding()

getInitDataBinding

public java.lang.String getInitDataBinding()

getTrackers

public DataListener[] getTrackers()

getRealId

public java.lang.String getRealId()

getConstantId

public java.lang.String getConstantId()

getMethods

public java.util.List<JavaMethod> getMethods()

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

compile

public boolean compile(JAXXCompiler compiler)
                throws CompilerException

Compiles the data binding expression. This method calls methods in JAXXCompiler to add the Java code that performs the data binding setup.

Parameters:

compiler - compiler which includes the data binding

Returns:

true if the expression has dependencies, false otherwise

Throws:

CompilerException - if a compilation error occurs

getInitDataBindingCode

protected java.lang.String getInitDataBindingCode(JAXXCompiler compiler,
                                                  DataSource dataSource,
                                                  boolean isBinding)

getProcessDataBindingCode

protected java.lang.String getProcessDataBindingCode(JAXXCompiler compiler,
                                                     DataSource dataSource,
                                                     boolean isBinding)