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Home » xwork-2.1.1-src » com.opensymphony.xwork2.conversion.annotations » [javadoc | source]
com.opensymphony.xwork2.conversion.annotations
public class: TypeConversion [javadoc | source]
com.opensymphony.xwork2.conversion.annotations.TypeConversion

This annotation is used for class and application wide conversion rules.

Class wide conversion:
The conversion rules will be assembled in a file called XXXAction-conversion.properties within the same package as the related action class. Set type to: type = ConversionType.CLASS

Allication wide conversion:
The conversion rules will be assembled within the xwork-conversion.properties file within the classpath root. Set type to: type = ConversionType.APPLICATION

Annotation usage: The TypeConversion annotation can be applied at property and method level.

Annotation parameters:
Parameter Required Default Description
key no The annotated property/key name The optional property name mostly used within TYPE level annotations.
type no ConversionType.CLASS Enum value of ConversionType. Determines whether the conversion should be applied at application or class level.
rule no ConversionRule.PROPERTY Enum value of ConversionRule. The ConversionRule can be a property, a Collection or a Map.
converter either this or value   The class name of the TypeConverter to be used as converter.
value either converter or this   The value to set for ConversionRule.KEY_PROPERTY.

Example code:


@Conversion()
public class ConversionAction implements Action {

private String convertInt;

private String convertDouble;
private List users = null;

private HashMap keyValues = null;

@TypeConversion(type = ConversionType.APPLICATION, converter = "com.opensymphony.xwork2.util.XWorkBasicConverter")
public void setConvertInt( String convertInt ) {
this.convertInt = convertInt;
}

@TypeConversion(converter = "com.opensymphony.xwork2.util.XWorkBasicConverter")
public void setConvertDouble( String convertDouble ) {
this.convertDouble = convertDouble;
}

@TypeConversion(rule = ConversionRule.COLLECTION, converter = "java.util.String")
public void setUsers( List users ) {
this.users = users;
}

@TypeConversion(rule = ConversionRule.MAP, converter = "java.math.BigInteger")
public void setKeyValues( HashMap keyValues ) {
this.keyValues = keyValues;
}

@TypeConversion(type = ConversionType.APPLICATION, property = "java.util.Date", converter = "com.opensymphony.xwork2.util.XWorkBasicConverter")
public String execute() throws Exception {
return SUCCESS;
}
}

Method from com.opensymphony.xwork2.conversion.annotations.TypeConversion Summary:
converter,   key,   rule,   type,   value
Method from com.opensymphony.xwork2.conversion.annotations.TypeConversion Detail:
 String converter() 
    The class of the TypeConverter to be used as converter. Note: This can not be used with ConversionRule.KEY_PROPERTY!
 String key() 
    The optional key name used within TYPE level annotations. Defaults to the property name.
 ConversionRule rule() 
    The ConversionRule can be a PROPERTY, KEY, KEY_PROPERTY, ELEMENT, COLLECTION (deprecated) or a MAP. Note: Collection and Map vonversion rules can be determined via com.opensymphony.xwork2.util.DefaultObjectTypeDeterminer.
 ConversionType type() 
    The ConversionType can be either APPLICATION or CLASS. Defaults to CLASS. Note: If you use ConversionType.APPLICATION, you can not set a value!
 String value() 
    If used with ConversionRule.KEY_PROPERTY specify a value here! Note: If you use ConversionType.APPLICATION, you can not set a value!