Examples of org.eclipse.persistence.mappings.DirectCollectionMapping

Package org.eclipse.persistence.mappings

Examples of org.eclipse.persistence.mappings.DirectCollectionMapping

org.eclipse.persistence.mappings.DirectCollectionMapping

Purpose: This mapping is used to store a collection of simple types (String, Number, Date, etc.) into a single table. The table must store the value and a foreign key to the source object. A converter can be used if the desired object type and the data type do not match. @see Converter @see ObjectTypeConverter @see TypeConversionConverter @see SerializedObjectConverter @author Sati @since TOPLink/Java 1.0

    public DirectCollectionMapping addDirectCollectionMapping(String name, String targetTable, String valueColumn, Class<?> valueType, String... fkFieldNames) throws IllegalArgumentException {
        if (fkFieldNames == null || getType().getDescriptor().getPrimaryKeyFields().size() != fkFieldNames.length) {
            throw new IllegalArgumentException("Invalid FK field names: " + fkFieldNames + " for target: ");
        }


        DirectCollectionMapping mapping = new DirectCollectionMapping();
        mapping.setAttributeName(name);
        mapping.setReferenceTableName(targetTable);
        mapping.setDirectFieldName(valueColumn);
        mapping.setDirectFieldClassification(valueType);


        for (int index = 0; index < fkFieldNames.length; index++) {
            String targetField = getType().getDescriptor().getPrimaryKeyFields().get(index).getName();
            mapping.addReferenceKeyFieldName(fkFieldNames[index], targetField);
        }


        mapping.useTransparentList();


        return (DirectCollectionMapping) addMapping(mapping);
    }

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DirectCollectionMapping mapping = (DirectCollectionMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setReferenceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getReferenceKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToReferenceKeyFieldAssociationsMapping.setAttributeName("sourceToReferenceKeyFieldAssociations");
        sourceToReferenceKeyFieldAssociationsMapping.setXPath(getPrimaryNamespaceXPath() + "reference-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

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    /**
     * INTERNAL:
     */
    protected void processDirectCollectionMapping() {
        // Initialize our mapping.
        DirectCollectionMapping mapping = new DirectCollectionMapping();
        
        // Process common direct collection metadata. This must be done 
        // before any field processing since field processing requires that 
        // the collection table be processed before hand.
        process(mapping);
        
        // Process the container and indirection policies.
        processContainerPolicyAndIndirection(mapping);
        
        // Process the value column (we must process this field before the 
        // call to processConverter, since it may set a field classification)
        mapping.setDirectField(getDatabaseField(getReferenceDatabaseTable(), MetadataLogger.VALUE_COLUMN));
        
        // Process a converter for this mapping. We will look for a convert
        // value. If none is found then we'll look for a JPA converter, that 
        // is, Enumerated, Lob and Temporal. With everything falling into 
        // a serialized mapping if no converter whatsoever is found.

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DirectCollectionMapping mapping = (DirectCollectionMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setReferenceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getReferenceKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToReferenceKeyFieldAssociationsMapping.setAttributeName("sourceToReferenceKeyFieldAssociations");
        sourceToReferenceKeyFieldAssociationsMapping.setXPath(getPrimaryNamespaceXPath() + "reference-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

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                m.setKeyConverter(this);
                m.setDirectKeyFieldClassification(fieldClassification);
                m.setDirectKeyFieldClassificationName(fieldClassificationName);
            }
        }  else if (mapping.isDirectCollectionMapping()) {
            DirectCollectionMapping m = (DirectCollectionMapping) mapping;
            
            if (disableConversion) {
                m.setValueConverter(null);
            } else {
                m.setValueConverter(this);
                m.setDirectFieldClassification(fieldClassification);
                m.setDirectFieldClassificationName(fieldClassificationName);
            }
        } else {
            // TODO: what else could it be???
        }
    }

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        process(mapping);


        processContainerPolicyAndIndirection((ContainerMapping) mapping);
        
        if (mapping instanceof DirectCollectionMapping) {
            DirectCollectionMapping directCollectionMapping = (DirectCollectionMapping) mapping;
            // Process the container and indirection policies.
            
            // Process the value column (we must process this field before the 
            // call to processConverter, since it may set a field classification)
            directCollectionMapping.setDirectField(getDatabaseField(getReferenceDatabaseTable(), MetadataLogger.VALUE_COLUMN));
    
            // To resolve any generic types (or respect an attribute type 
            // specification) we need to set the attribute classification on the 
            // mapping to ensure we do the right conversions.
            if (hasAttributeType() || getAccessibleObject().isGenericCollectionType()) {
                directCollectionMapping.setDirectFieldClassificationName(getJavaClassName(getReferenceClass()));
            }
        } else if (mapping.isAbstractCompositeDirectCollectionMapping()) {
            ((AbstractCompositeDirectCollectionMapping) mapping).setField(getDatabaseField(getDescriptor().getPrimaryTable(), MetadataLogger.COLUMN));
        }

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        process(mapping);


        processContainerPolicyAndIndirection((ContainerMapping) mapping);
        
        if (mapping instanceof DirectCollectionMapping) {
            DirectCollectionMapping directCollectionMapping = (DirectCollectionMapping) mapping;
            // Process the container and indirection policies.
            
            // Process the value column (we must process this field before the 
            // call to processConverter, since it may set a field classification)
            directCollectionMapping.setDirectField(getDatabaseField(getReferenceDatabaseTable(), MetadataLogger.VALUE_COLUMN));
    
            // To resolve any generic types (or respect an attribute type 
            // specification) we need to set the attribute classification on the 
            // mapping to ensure we do the right conversions.
            if (hasAttributeType() || getAccessibleObject().isGenericCollectionType()) {
                directCollectionMapping.setDirectFieldClassificationName(getJavaClassName(getReferenceClass()));
            }
        } else if (mapping.isAbstractCompositeDirectCollectionMapping()) {
            ((AbstractCompositeDirectCollectionMapping) mapping).setField(getDatabaseField(getDescriptor().getPrimaryTable(), MetadataLogger.COLUMN));
        }

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    public DirectCollectionMapping addDirectCollectionMapping(String name, String targetTable, String valueColumn, Class<?> valueType, String... fkFieldNames) throws IllegalArgumentException {
        if (fkFieldNames == null || getType().getDescriptor().getPrimaryKeyFields().size() != fkFieldNames.length) {
            throw new IllegalArgumentException("Invalid FK field names: " + fkFieldNames + " for target: ");
        }


        DirectCollectionMapping mapping = new DirectCollectionMapping();
        mapping.setAttributeName(name);
        mapping.setReferenceTableName(targetTable);
        mapping.setDirectFieldName(valueColumn);
        mapping.setDirectFieldClassification(valueType);


        for (int index = 0; index < fkFieldNames.length; index++) {
            String targetField = getType().getDescriptor().getPrimaryKeyFields().get(index).getName();
            mapping.addReferenceKeyFieldName(fkFieldNames[index], targetField);
        }


        mapping.useTransparentList();


        return (DirectCollectionMapping) addMapping(mapping);
    }

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                m.setKeyConverter(this);
                m.setDirectKeyFieldClassification(fieldClassification);
                m.setDirectKeyFieldClassificationName(fieldClassificationName);
            }
        }  else if (mapping.isDirectCollectionMapping()) {
            DirectCollectionMapping m = (DirectCollectionMapping) mapping;
            
            if (disableConversion) {
                m.setValueConverter(null);
            } else {
                m.setValueConverter(this);
                m.setDirectFieldClassification(fieldClassification);
                m.setDirectFieldClassificationName(fieldClassificationName);
            }
        } else {
            // TODO: what else could it be???
        }
    }

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DirectCollectionMapping mapping = (DirectCollectionMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setReferenceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getReferenceKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToReferenceKeyFieldAssociationsMapping.setAttributeName("sourceToReferenceKeyFieldAssociations");
        sourceToReferenceKeyFieldAssociationsMapping.setXPath(getPrimaryNamespaceXPath() + "reference-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

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