org.jibx.binding.def
Class DirectGeneric

java.lang.Object
  org.jibx.binding.def.DirectGeneric

All Implemented Interfaces:

IComponent, ILinkable

public class DirectGeneric
extends Object
implements IComponent

Linkage to generic object with defined marshaller and/or unmarshaller. This provides methods used to generate code for marshalling and unmarshalling objects of types unknown at binding time, so long as they have mappings defined.

Version:

1.0

Author:

Dennis M. Sosnoski

Constructor Summary

DirectGeneric(IContainer parent, String type)
Constructor without implicit property.

DirectGeneric(IContainer parent, String type, PropertyDefinition prop)
Constructor with defined property.

Method Summary

void	genAttributeMarshal(ContextMethodBuilder mb) Generate attribute marshalling code.
void	genAttributeUnmarshal(ContextMethodBuilder mb) Generate attribute unmarshalling code.
void	genAttrPresentTest(ContextMethodBuilder mb) Generate code to test for attribute present.
void	genContentMarshal(ContextMethodBuilder mb) Generate element or text marshalling code.
void	genContentPresentTest(ContextMethodBuilder mb) Generate code to test for content present.
void	genContentUnmarshal(ContextMethodBuilder mb) Generate element or text unmarshalling code.
void	genLoadId(ContextMethodBuilder mb) Generate code to load ID value of instance to stack.
void	genMarshal(ContextMethodBuilder mb) Generate marshalling code for this mapping.
void	genNewInstance(ContextMethodBuilder mb) Generate code to create new instance of object.
void	genTestPresent(ContextMethodBuilder mb) Generate presence test code for this mapping.
void	genUnmarshal(ContextMethodBuilder mb) Generate unmarshalling code for this mapping.
String	getType() Get type expected by component.
NameDefinition	getWrapperName() Get element wrapper name.
boolean	hasAttribute() Check if component defines one or more attribute values of the containing element.
boolean	hasContent() Check if component defines one or more elements or text values as children of the containing element.
boolean	hasId() Check if component defines an ID value for instances of context object.
boolean	isOptional() Check if component is an optional item.
void	print(int depth)
void	setLinkages() Establish and validate linkages between binding components.

Methods inherited from class java.lang.Object

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

Constructor Detail

DirectGeneric

public DirectGeneric(IContainer parent,
                     String type)

Constructor without implicit property.

Parameters:

parent - containing binding definition structure

type - fully qualified class name of object type handled by this binding (null if unspecified)

DirectGeneric

public DirectGeneric(IContainer parent,
                     String type,
                     PropertyDefinition prop)

Constructor with defined property.

Parameters:

parent - containing binding definition structure

type - fully qualified class name of object type handled by this binding (null if unspecified)

prop - associated property information

Method Detail

genTestPresent

public void genTestPresent(ContextMethodBuilder mb)

Generate presence test code for this mapping. The generated code just checks that a start tag is next in the document, rather than an end tag.

Parameters:

mb - method builder

genUnmarshal

public void genUnmarshal(ContextMethodBuilder mb)
                  throws JiBXException

Generate unmarshalling code for this mapping. The generated code just calls the generic unmarshal element method, leaving the unmarshalled object on the stack (after casting it, if necessary, to the appropriate type). TODO: Instead call unmarshalling method with class passed directly, for better error reporting.

Parameters:

mb - method builder

Throws:

JiBXException

genMarshal

public void genMarshal(ContextMethodBuilder mb)
                throws JiBXException

Generate marshalling code for this mapping. The generated code loads the object reference and casts it to the generic marshal interface, then calls the marshal method of that interface.

Parameters:

mb - method builder

Throws:

JiBXException

isOptional

public boolean isOptional()

Description copied from interface: IComponent

Check if component is an optional item.

Specified by:

isOptional in interface IComponent

Returns:

true if optional, false if required

hasAttribute

public boolean hasAttribute()

Description copied from interface: IComponent

Check if component defines one or more attribute values of the containing element.

Specified by:

hasAttribute in interface IComponent

Returns:

true if one or more attribute values defined for containing element, false if not

genAttrPresentTest

public void genAttrPresentTest(ContextMethodBuilder mb)

Description copied from interface: IComponent

Generate code to test for attribute present. This generates code that tests if a child is present as determined by attributes of the containing start tag. It leaves the result of the test (zero if missing, nonzero if present) on the stack. This call is only valid if this component has one or more attributes for the containing element.

Specified by:

genAttrPresentTest in interface IComponent

Parameters:

mb - method builder

genAttributeUnmarshal

public void genAttributeUnmarshal(ContextMethodBuilder mb)

Description copied from interface: IComponent

Generate attribute unmarshalling code. This is called within the code generation for the unmarshaller of the class associated with the containing element. It needs to generate the necessary code for handling the unmarshalling operation, leaving the unmarshalled object reference on the stack.

Specified by:

genAttributeUnmarshal in interface IComponent

Parameters:

mb - method builder

genAttributeMarshal

public void genAttributeMarshal(ContextMethodBuilder mb)

Description copied from interface: IComponent

Generate attribute marshalling code. This is called within the code generation for the marshaller of the class associated with the containing element. It needs to generate the necessary code for handling the marshalling operation, consuming the marshalled object reference from the stack.

Specified by:

genAttributeMarshal in interface IComponent

Parameters:

mb - method builder

hasContent

public boolean hasContent()

Description copied from interface: IComponent

Check if component defines one or more elements or text values as children of the containing element. This method is only valid after the call to ILinkable.setLinkages().

Specified by:

hasContent in interface IComponent

Returns:

true if one or more content values defined for containing element, false if not

genContentPresentTest

public void genContentPresentTest(ContextMethodBuilder mb)
                           throws JiBXException

Description copied from interface: IComponent

Generate code to test for content present. This generates code that tests if a required element is present, leaving the result of the test (zero if missing, nonzero if present) on the stack. This call is only valid if this component has one or more content components for the containing element.

Specified by:

genContentPresentTest in interface IComponent

Parameters:

mb - method builder

Throws:

JiBXException - if configuration error

genContentUnmarshal

public void genContentUnmarshal(ContextMethodBuilder mb)
                         throws JiBXException

Description copied from interface: IComponent

Generate element or text unmarshalling code. This is called within the code generation for the unmarshaller of the class associated with the containing element. It needs to generate the necessary code for handling the unmarshalling operation, leaving the unmarshalled object reference on the stack.

Specified by:

genContentUnmarshal in interface IComponent

Parameters:

mb - method builder

Throws:

JiBXException - if error in configuration

genContentMarshal

public void genContentMarshal(ContextMethodBuilder mb)
                       throws JiBXException

Description copied from interface: IComponent

Generate element or text marshalling code. This is called within the code generation for the marshaller of the class associated with the containing element. It needs to generate the necessary code for handling the marshalling operation, consuming the marshalled object reference from the stack.

Specified by:

genContentMarshal in interface IComponent

Parameters:

mb - method builder

Throws:

JiBXException - if error in configuration

genNewInstance

public void genNewInstance(ContextMethodBuilder mb)

Description copied from interface: IComponent

Generate code to create new instance of object. This is called within the code generation for the unmarshaller of the class associated with the containing element. It needs to generate the necessary code for creating an instance of the object to be unmarshalled, leaving the object reference on the stack.

Specified by:

genNewInstance in interface IComponent

Parameters:

mb - method builder

getType

public String getType()

Description copied from interface: IComponent

Get type expected by component.

Specified by:

getType in interface IComponent

Returns:

fully qualified class name of expected type

hasId

public boolean hasId()

Description copied from interface: IComponent

Check if component defines an ID value for instances of context object.

Specified by:

hasId in interface IComponent

Returns:

true if ID value defined for instances, false if not

genLoadId

public void genLoadId(ContextMethodBuilder mb)

Description copied from interface: IComponent

Generate code to load ID value of instance to stack. The generated code should assume that the top of the stack is the reference for the containing object. It must consume this and leave the actual ID value on the stack (as a String).

Specified by:

genLoadId in interface IComponent

Parameters:

mb - method builder

getWrapperName

public NameDefinition getWrapperName()

Description copied from interface: IComponent

Get element wrapper name. If the component defines an element as the container for content, this returns the name information for that element.

Specified by:

getWrapperName in interface IComponent

Returns:

component element name, null if no wrapper element

setLinkages

public void setLinkages()

Description copied from interface: ILinkable

Establish and validate linkages between binding components. This is called after the basic binding structures have been set up. All linkages between components must be resolved by this method, in order to prevent problems due to the order of definitions between components. This implies that each component must in turn call the same method for each child component. None of the other method calls defined by this interface are valid until after this call.

Specified by:

setLinkages in interface ILinkable

print

public void print(int depth)

Specified by:

print in interface IComponent