org.nuiton.jaxx.compiler.binding

Class DataBinding

java.lang.Object

org.nuiton.jaxx.compiler.binding.DataBinding

Direct Known Subclasses:

PseudoClassDataBinding

public class DataBinding
extends 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

Fields

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

Constructor Summary

Constructors

Constructor and Description
DataBinding(String id, String source, String assignment, boolean quickNoDependencies) Creates a new data binding.

Method Summary

Modifier and Type	Method and Description
boolean	compile(JAXXCompiler compiler) Compiles the data binding expression.
String	getAssignment()
protected String	getAssignment(JAXXCompiler compiler, Set<String> overrides)
String	getConstantId()
String	getInitDataBinding()
protected String	getInitDataBindingCode(JAXXCompiler compiler, DataSource dataSource, boolean isBinding)
List<JavaMethod>	getMethods()
String	getProcessDataBinding()
protected String	getProcessDataBindingCode(JAXXCompiler compiler, DataSource dataSource, boolean isBinding)
String	getRealId()
String	getSource()
DataListener[]	getTrackers()
boolean	isQuickNoDependencies()
protected String	replaceOverrides(JAXXCompiler compiler, Set<String> overrides, String code)
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 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 String processDataBinding

code to add to processDataBinding (null if no binding)

initDataBinding

protected String initDataBinding

code to register the databinding (null if no binding)

methods

protected final List<JavaMethod> methods

Extra method to add to the binding

Constructor Detail

DataBinding

public DataBinding(String id,
                   String source,
                   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 String getAssignment()

getSource

public String getSource()

isQuickNoDependencies

public boolean isQuickNoDependencies()

getProcessDataBinding

public String getProcessDataBinding()

getInitDataBinding

public String getInitDataBinding()

getTrackers

public DataListener[] getTrackers()

getRealId

public String getRealId()

getConstantId

public String getConstantId()

getMethods

public List<JavaMethod> getMethods()

toString

public String toString()

Overrides:

toString in class 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 String getInitDataBindingCode(JAXXCompiler compiler,
                                        DataSource dataSource,
                                        boolean isBinding)

getProcessDataBindingCode

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

getAssignment

protected String getAssignment(JAXXCompiler compiler,
                               Set<String> overrides)

replaceOverrides

protected String replaceOverrides(JAXXCompiler compiler,
                                  Set<String> overrides,
                                  String code)