Examples of org.eclipse.persistence.mappings.OneToManyMapping

Package org.eclipse.persistence.mappings

Examples of org.eclipse.persistence.mappings.OneToManyMapping

org.eclipse.persistence.mappings.OneToManyMapping

Purpose: This mapping is used to represent the typical RDBMS relationship between a single source object and collection of target objects; where, on the database, the target objects have references (foreign keys) to the source object. @author Sati @since TOPLink/Java 1.0

                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                OneToManyMapping mapping = (OneToManyMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setTargetForeignKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getTargetForeignKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToTargetKeyFieldAssociationsMapping.setAttributeName("sourceToTargetKeyFieldAssociations");
        sourceToTargetKeyFieldAssociationsMapping.setXPath(getSecondaryNamespaceXPath() + "target-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                OneToManyMapping mapping = (OneToManyMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setTargetForeignKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getTargetForeignKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToTargetKeyFieldAssociationsMapping.setAttributeName("sourceToTargetKeyFieldAssociations");
        sourceToTargetKeyFieldAssociationsMapping.setXPath(getSecondaryNamespaceXPath() + "target-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

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    public OneToManyMapping addOneToManyMapping(String name, DynamicType refType, String... fkFieldNames) {
        if (fkFieldNames == null || getType().getDescriptor().getPrimaryKeyFields().size() != fkFieldNames.length) {
            throw new IllegalArgumentException("Invalid FK field names: " + fkFieldNames + " for target: " + refType);
        }


        OneToManyMapping mapping = new OneToManyMapping();
        mapping.setAttributeName(name);
        mapping.setReferenceClass(refType.getJavaClass());


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


        mapping.useTransparentList();


        return (OneToManyMapping) addMapping(mapping);
    }

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                OneToManyMapping mapping = (OneToManyMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setTargetForeignKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getTargetForeignKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToTargetKeyFieldAssociationsMapping.setAttributeName("sourceToTargetKeyFieldAssociations");
        sourceToTargetKeyFieldAssociationsMapping.setXPath(getSecondaryNamespaceXPath() + "target-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

View Full Code Here

     * INTERNAL:
     */
    protected void prepareOneToManySelectionQuery(OneToManyMapping sourceMapping, AbstractSession session) {
        // Clone the mapping because in reality that is what we have, that 
        // is, a 1-M mapping to each class of the hierarchy.
        OneToManyMapping oneToMany = (OneToManyMapping) sourceMapping.clone();
            
        // Update the foreign key fields on the mapping. Basically, take the
        // table name off and let the descriptor figure it out.
        Vector<DatabaseField> targetForeignKeyFields = new Vector<DatabaseField>();
        for (DatabaseField fkField : oneToMany.getTargetForeignKeysToSourceKeys().keySet()) {
            targetForeignKeyFields.add(new DatabaseField(fkField.getName()));
        }
                    
        // Update our foreign key fields and clear the key maps.
        oneToMany.setTargetForeignKeyFields(targetForeignKeyFields);
        oneToMany.getTargetForeignKeysToSourceKeys().clear();
        oneToMany.getSourceKeysToTargetForeignKeys().clear();
        
        addSelectionQuery(oneToMany, sourceMapping, session);
    }

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                OneToManyMapping mapping = (OneToManyMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setTargetForeignKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getTargetForeignKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToTargetKeyFieldAssociationsMapping.setAttributeName("sourceToTargetKeyFieldAssociations");
        sourceToTargetKeyFieldAssociationsMapping.setXPath(getSecondaryNamespaceXPath() + "target-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

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              // Set the mapping to read only
              mapping.setIsReadOnly(true);
           } else {
               // Create a 1-M mapping and process common collection mapping 
               // metadata first followed by specific metadata.
              OneToManyMapping mapping = new OneToManyMapping();
              process(mapping);
              
               Map<DatabaseField, DatabaseField> keys = ownerMapping.getSourceToTargetKeyFields();
               for (DatabaseField fkField : keys.keySet()) {
                   DatabaseField pkField = keys.get(fkField);
                    
                   // If we are within a table per class strategy we have to update
                   // the primary key field to point to our own database table. 
                   // The extra table check is if the mapping is actually defined
                   // on our java class (meaning we have the right table at this
                   // point and can avoid the cloning)
                   if (getDescriptor().usesTablePerClassInheritanceStrategy() && ! pkField.getTable().equals(getDescriptor().getPrimaryTable())) {
                       // We need to update the pk field to be to our table.
                       pkField = pkField.clone();
                       pkField.setTable(getDescriptor().getPrimaryTable());
                   }
                
                   mapping.addTargetForeignKeyField(fkField, pkField);
               }
           }
       } else {
           // If improper mapping encountered, throw an exception.
           throw ValidationException.invalidMapping(getJavaClass(), getReferenceClass());

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              // Set the mapping to read only
              mapping.setIsReadOnly(true);
           } else {
               // Create a 1-M mapping and process common collection mapping 
               // metadata first followed by specific metadata.
              OneToManyMapping mapping = new OneToManyMapping();
              process(mapping);
              
               Map<DatabaseField, DatabaseField> keys = ownerMapping.getSourceToTargetKeyFields();
               for (DatabaseField fkField : keys.keySet()) {
                   DatabaseField pkField = keys.get(fkField);
                    
                   // If we are within a table per class strategy we have to update
                   // the primary key field to point to our own database table. 
                   // The extra table check is if the mapping is actually defined
                   // on our java class (meaning we have the right table at this
                   // point and can avoid the cloning)
                   if (getDescriptor().usesTablePerClassInheritanceStrategy() && ! pkField.getTable().equals(getDescriptor().getPrimaryTable())) {
                       // We need to update the pk field to be to our table.
                       pkField = pkField.clone();
                       pkField.setTable(getDescriptor().getPrimaryTable());
                   }
                
                   mapping.addTargetForeignKeyField(fkField, pkField);
               }
           }
       } else {
           // If improper mapping encountered, throw an exception.
           throw ValidationException.invalidMapping(getJavaClass(), getReferenceClass());

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                }
                return associations;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                OneToManyMapping mapping = (OneToManyMapping)object;
                List associations = (List)value;
                mapping.setSourceKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                mapping.setTargetForeignKeyFields(NonSynchronizedVector.newInstance(associations.size()));
                Iterator iterator = associations.iterator();
                while (iterator.hasNext()) {
                    Association association = (Association)iterator.next();
                    mapping.getSourceKeyFields().add((DatabaseField)association.getValue());
                    mapping.getTargetForeignKeyFields().add((DatabaseField)association.getKey());
                }
            }
        });
        sourceToTargetKeyFieldAssociationsMapping.setAttributeName("sourceToTargetKeyFieldAssociations");
        sourceToTargetKeyFieldAssociationsMapping.setXPath(getSecondaryNamespaceXPath() + "target-foreign-key/" + getSecondaryNamespaceXPath() + "field-reference");

View Full Code Here

     * INTERNAL:
     */
    protected void prepareOneToManySelectionQuery(OneToManyMapping sourceMapping, AbstractSession session) {
        // Clone the mapping because in reality that is what we have, that 
        // is, a 1-M mapping to each class of the hierarchy.
        OneToManyMapping oneToMany = (OneToManyMapping) sourceMapping.clone();
            
        // Update the foreign key fields on the mapping. Basically, take the
        // table name off and let the descriptor figure it out.
        Vector<DatabaseField> targetForeignKeyFields = new Vector<DatabaseField>();
        for (DatabaseField fkField : oneToMany.getTargetForeignKeysToSourceKeys().keySet()) {
            targetForeignKeyFields.add(new DatabaseField(fkField.getName()));
        }
                    
        // Update our foreign key fields and clear the key maps.
        oneToMany.setTargetForeignKeyFields(targetForeignKeyFields);
        oneToMany.getTargetForeignKeysToSourceKeys().clear();
        oneToMany.getSourceKeysToTargetForeignKeys().clear();
        
        addSelectionQuery(oneToMany, sourceMapping, session);
    }

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