Examples of org.apache.jdo.model.java.JavaType

org.apache.jdo.model.java.JavaType
A JavaType instance represents a type as defined in the Java language. The interface defines interrogative methods to check whether a type is primitive, an interface or array, is a JDO supported collection or map, is a value or trackable class, is a persistence capable class, etc. Furthermore it defines methods to get detailed information about the type such as name, modifiers, superclass and the JDO meta data if this type represent a persistence capable class.
Different environments (runtime, enhancer, development) will have different JavaType implementations to provide answers to the various methods. @author Michael Bouschen @since JDO 1.0.1

            // return java field, if explicitly set by the setter
            return javaField;
        }
        
        // not set => calculate
        JavaType javaType = getDeclaringClass().getJavaType();
        return javaType.getJavaProperty(getName());
    }

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            // return embeddedElement, if explicitly set by the setter
            return embeddedElement.booleanValue();
        }
        
        // not set => calculate
        JavaType elementType = getElementType();
        return (elementType != null) ? 
            TypeSupport.isEmbeddedElementType(elementType) : false;
    }

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     * Get the type representation of the array component type. 
     * @return the array component type
     */
    public JavaType getElementType() {
        JDOField jdoField = getDeclaringField();
        JavaType fieldType = jdoField.getType();
        return (fieldType != null) ? fieldType.getArrayComponentType() : null;
    }

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            return persistenceModifier;
        }
        
        // not set => calculate
        int result = PersistenceModifier.UNSPECIFIED;
        JavaType type = getType();
        if (nameHasJDOPrefix()) {
            result = PersistenceModifier.NONE;
        }
        else if (type != null) {
            result = TypeSupport.isPersistenceFieldType(type) ?

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        boolean dfg = false;
        if (isPrimaryKey()) {
            dfg = false;
        }
        else {
            JavaType type = getType();
            if ((type != null) && type.isValue()) {
                dfg = true;
            }
        }
        
        return dfg;

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            return embedded.booleanValue();
        }
        
        // not set => calculate
        boolean result = false;
        JavaType type = getType();
        if (type != null) {
            result = TypeSupport.isEmbeddedFieldType(type);
        }
        return result;
    }

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            // return java field, if explicitly set by the setter
            return javaField;
        }
        
        // not set => calculate
        JavaType javaType = getDeclaringClass().getJavaType();
        return javaType.getJavaField(getName());
    }

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            // field has persistence modifier none => cannot be a relationship
            return null;
                            
        // check the type if available
        JDORelationship rel = null;
        JavaType type = getType();
        if (type != null) {
            if (type.isValue() || TypeSupport.isValueArrayType(type)) {
                // no relationship
                rel = null;
            }
            else if (type.isJDOSupportedCollection()) {
                rel = createJDOCollectionInternal();
            }
            else if (type.isJDOSupportedMap()) {
                rel = createJDOMapInternal();
            }
            else if (type.isArray()) {
                rel = createJDOArrayInternal();
            }
            else {
                rel = createJDOReferenceInternal();
            }

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    public JavaField getJavaField() {
        if (javaField == null) {
            // not set => calculate
            // Please note, cannot call super.getJavaField, because it
            // returns a JavaField!
            JavaType javaType = getDeclaringClass().getJavaType();
            javaField = javaType.getJavaProperty(getName());
        }
        return javaField;
    }

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     * @return the component type of the property type in case of an array or
     * collection.
     */
    public JavaType getComponentType()
    {
        JavaType componentType = null;
        JavaType type = getType();
        if (type.isArray())
            componentType = type.getArrayComponentType();
        else if (type.isJDOSupportedCollection())
            componentType = PredefinedType.objectType;
        return componentType;
    }

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