org.datanucleus.store.mapped.scostore
Class JoinArrayStore

java.lang.Object
  org.datanucleus.store.mapped.scostore.BaseContainerStore
      org.datanucleus.store.mapped.scostore.ElementContainerStore
          org.datanucleus.store.mapped.scostore.AbstractArrayStore
              org.datanucleus.store.mapped.scostore.JoinArrayStore

All Implemented Interfaces:

ArrayStoreQueryable, ArrayStore, Store

public abstract class JoinArrayStore
extends AbstractArrayStore

Backing store for an array stored using a join table. Can be used for all types of arrays :- PC arrays, non-PC arrays, reference arrays.

Nested Class Summary

Nested classes/interfaces inherited from class org.datanucleus.store.mapped.scostore.ElementContainerStore

ElementContainerStore.ElementInfo

Field Summary

Fields inherited from class org.datanucleus.store.mapped.scostore.ElementContainerStore

clr, containerTable, elementInfo, elementIsPersistentInterface, elementMapping, elementsAreEmbedded, elementsAreSerialised, elementType, emd, iterateUsingDiscriminator, orderMapping, relationDiscriminatorMapping, relationDiscriminatorValue, specialization

Fields inherited from class org.datanucleus.store.mapped.scostore.BaseContainerStore

allowsNull, dba, LOCALISER, ownerMapping, ownerMemberMetaData, relationType, storeMgr

Constructor Summary

JoinArrayStore(DatastoreContainerObject joinTable, AbstractMemberMetaData ownerFieldMetaData, JavaTypeMapping ownerMapping, JavaTypeMapping elementMapping, JavaTypeMapping orderMapping, JavaTypeMapping relationDiscriminatorMapping, java.lang.String relationDiscriminatorValue, java.lang.String elementType, boolean elementsAreEmbedded, boolean elementsAreSerialised, ClassLoaderResolver clr, JoinArrayStoreSpecialization specialization)
Constructor.

Method Summary

ScalarExpression

joinElementsTo(QueryExpression stmt, QueryExpression parentStmt, JavaTypeMapping ownerMapping, LogicSetExpression ownerTe, DatastoreIdentifier listTableAlias, java.lang.Class filteredElementType, ScalarExpression elmExpr, DatastoreIdentifier elementTableAlias) Method used in queries when contains() has been invoked.

Methods inherited from class org.datanucleus.store.mapped.scostore.AbstractArrayStore

add, clear, getArray, getExistsSubquery, getSizeSubquery, iterator, set

Methods inherited from class org.datanucleus.store.mapped.scostore.ElementContainerStore

getContainerTable, getElementInfo, getElementInformationForClass, getElementMapping, getElementType, getEmd, getOrderMapping, getRelationDiscriminatorMapping, getRelationDiscriminatorValue, hasOrderMapping, isElementsAreEmbedded, isElementsAreSerialised, size, validateElementForReading, validateElementForWriting, validateElementType

Methods inherited from class org.datanucleus.store.mapped.scostore.BaseContainerStore

allowsBatching, getDatastoreAdapter, getOwnerMapping, getOwnerMemberMetaData, getRelationType, getStateManagerForEmbeddedPCObject, getStoreManager, isEmbeddedMapping, setOwner

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.datanucleus.store.scostore.ArrayStore

getElementType, size

Methods inherited from interface org.datanucleus.store.scostore.Store

getStoreManager

Constructor Detail

JoinArrayStore

public JoinArrayStore(DatastoreContainerObject joinTable,
                      AbstractMemberMetaData ownerFieldMetaData,
                      JavaTypeMapping ownerMapping,
                      JavaTypeMapping elementMapping,
                      JavaTypeMapping orderMapping,
                      JavaTypeMapping relationDiscriminatorMapping,
                      java.lang.String relationDiscriminatorValue,
                      java.lang.String elementType,
                      boolean elementsAreEmbedded,
                      boolean elementsAreSerialised,
                      ClassLoaderResolver clr,
                      JoinArrayStoreSpecialization specialization)

Constructor.

Parameters:

joinTable - Join table storing the relationship between owner and element

clr - ClassLoader resolver

Method Detail

joinElementsTo

public ScalarExpression joinElementsTo(QueryExpression stmt,
                                       QueryExpression parentStmt,
                                       JavaTypeMapping ownerMapping,
                                       LogicSetExpression ownerTe,
                                       DatastoreIdentifier listTableAlias,
                                       java.lang.Class filteredElementType,
                                       ScalarExpression elmExpr,
                                       DatastoreIdentifier elementTableAlias)

Method used in queries when contains() has been invoked.

Parameters:

stmt - The Query Statement

parentStmt - the parent Query Statement. If there is no parent, parentStmt must be equals to stmt

ownerMapping - the mapping for the owner.

ownerTe - Table Expression for the owner

listTableAlias - Alias for the "List" table.

filteredElementType - The Class Type for the filtered element

elmExpr - The Expression for the element

elementTableAlias - The SQL alias to assign to the expression or to the element table.

Returns:

expression to the join