Examples of oracle.toplink.essentials.mappings.OneToOneMapping

Package oracle.toplink.essentials.mappings

Examples of oracle.toplink.essentials.mappings.OneToOneMapping

oracle.toplink.essentials.mappings.OneToOneMapping

Purpose: One to one mappings are used to represent a pointer references between two java objects. This mappings is usually represented by a single pointer (stored in an instance variable) between the source and target objects. In the relational database tables, these mappings are normally implemented using foreign keys. @author Sati @since TOPLink/Java 1.0

     * Process a @ManyToOne or many-to-one element into a TopLink OneToOne 
     * mapping.
     */
    public void process() {
        // Initialize our mapping now with what we found.
        OneToOneMapping mapping = initOneToOneMapping();


        // Now process the JoinColumns (if there are any) for this mapping.
        processOwningMappingKeys(mapping);
        
        // Add the mapping to the descriptor.

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     * Process a @OneToOne or one-to-one element into a TopLink OneToOne 
     * mapping.
     */
    public void process() {
        // Initialize our mapping now with what we found.
        OneToOneMapping mapping = initOneToOneMapping();
        
        if (getMappedBy().equals("")) {
            // Owning side, look for JoinColumns or PrimaryKeyJoinColumns.
            processOwningMappingKeys(mapping);
        } else {  
            // Non-owning side, process the foreign keys from the owner.
            OneToOneMapping ownerMapping = null;
            if (getOwningMapping().isOneToOneMapping()){
              ownerMapping = (OneToOneMapping)getOwningMapping();
            } else {
              // If improper mapping encountered, throw an exception.
              getValidator().throwInvalidMappingEncountered(getJavaClass(), getReferenceClass());
            }


            mapping.setSourceToTargetKeyFields(ownerMapping.getTargetToSourceKeyFields());
            mapping.setTargetToSourceKeyFields(ownerMapping.getSourceToTargetKeyFields());
        }
        
        // Add the mapping to the descriptor.
        m_descriptor.addMapping(mapping);
    }

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            // metadata.
            OneToManyMapping mapping = new OneToManyMapping();
            process(mapping);
            
            // Non-owning side, process the foreign keys from the owner.
      OneToOneMapping ownerMapping = null;
            if (getOwningMapping().isOneToOneMapping()){ 
              ownerMapping = (OneToOneMapping) getOwningMapping();
            } else {
        // If improper mapping encountered, throw an exception.
              getValidator().throwInvalidMappingEncountered(getJavaClass(), getReferenceClass()); 
            }
                
            Map<DatabaseField, DatabaseField> keys = ownerMapping.getSourceToTargetKeyFields();
            for (DatabaseField fkField : keys.keySet()) {
                mapping.addTargetForeignKeyField(fkField, keys.get(fkField));
            }   
            
            // Add the mapping to the descriptor.

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    /**
     * INTERNAL:
     * Initialize a OneToOneMapping.
     */
    protected OneToOneMapping initOneToOneMapping() {
      OneToOneMapping mapping = new OneToOneMapping();
        mapping.setIsReadOnly(false);
        mapping.setIsPrivateOwned(false);
        mapping.setIsOptional(isOptional());
        mapping.setAttributeName(getAttributeName());
        mapping.setReferenceClassName(getReferenceClassName());
        
        // If the global weave for value holders is true, the use the value
        // from usesIndirection. Otherwise, force it to false.
        boolean usesIndirection = (m_project.enableLazyForOneToOne()) ? usesIndirection() : false;
        if (usesIndirection && m_descriptor.usesPropertyAccess()) {
            mapping.setIndirectionPolicy(new WeavedObjectBasicIndirectionPolicy(getSetMethodName()));
        } else {
            mapping.setUsesIndirection(usesIndirection);
        }
        
        // Set the getter and setter methods if access is PROPERTY.
        setAccessorMethods(mapping);

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Related Classes of oracle.toplink.essentials.mappings.OneToOneMapping

oracle.toplink.essentials.descriptors.ClassDescriptor

oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ManyToOneAccessor

oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.ObjectAccessor

oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.OneToManyAccessor

oracle.toplink.essentials.internal.ejb.cmp3.metadata.accessors.OneToOneAccessor

oracle.toplink.essentials.internal.sessions.AbstractRecord

oracle.toplink.essentials.sessions.DatabaseRecord

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