public JDBCEntityBridge(JDBCEntityMetaData metadata, JDBCStoreManager manager) throws Exception {
this.metadata = metadata;
this.manager = manager;
primaryKeyFieldName = metadata.getPrimaryKeyFieldName();
primaryKeyClass = metadata.getPrimaryKeyClass();
log = Logger.getLogger(this.getClass().getName() + "." + metadata.getName());
}
private void loadCMRFields(JDBCEntityMetaData metadata) {
cmrFields = new JDBCCMRFieldBridge[metadata.getRelationshipRoles().size()];
// create each field
int cmrFieldIndex = 0;
for (Iterator iter = metadata.getRelationshipRoles().iterator(); iter.hasNext(); ) {
JDBCRelationshipRoleMetaData relationshipRole = (JDBCRelationshipRoleMetaData) iter.next();
JDBCCMRFieldBridge cmrField = new JDBCCMRFieldBridge(this, manager, relationshipRole);
cmrFields[cmrFieldIndex++] = cmrField;
}
}
private void loadLoadGroups(JDBCEntityMetaData metadata) {
loadGroupMasks = new HashMap();
// load optimistic locking mask and add it to all the load group masks
JDBCOptimisticLockingMetaData olMD = metadata.getOptimisticLocking();
if (olMD != null) {
if (versionField != null) {
defaultLockGroupMask = new boolean[tableFields.length];
defaultLockGroupMask[versionField.getTableIndex()] = true;
versionField.setLockingStrategy(LockingStrategy.VERSION);
} else if (olMD.getGroupName() != null) {
defaultLockGroupMask = loadGroupMask(olMD.getGroupName(), null);
for (int i = 0; i < tableFields.length; ++i) {
if (defaultLockGroupMask[i]) {
JDBCCMPFieldBridge tableField = tableFields[i];
tableField.setLockingStrategy(LockingStrategy.GROUP);
tableField.addDefaultFlag(ADD_TO_WHERE_ON_UPDATE);
}
}
} else { // read or modified strategy
LockingStrategy strategy =
(olMD.getLockingStrategy()
== JDBCOptimisticLockingMetaData.LockingStrategy.READ_STRATEGY
? LockingStrategy.READ
: LockingStrategy.MODIFIED);
for (int i = 0; i < tableFields.length; ++i) {
JDBCCMPFieldBridge field = tableFields[i];
if (!field.isPrimaryKeyMember()) field.setLockingStrategy(strategy);
}
}
}
// add the * load group
boolean[] defaultLoadGroup = new boolean[tableFields.length];
Arrays.fill(defaultLoadGroup, true);
for (int i = 0; i < primaryKeyFields.length; ++i) {
int tableIndex = primaryKeyFields[i].getTableIndex();
defaultLoadGroup[tableIndex] = false;
}
loadGroupMasks.put(DEFAULT_LOADGROUP_NAME, defaultLoadGroup);
// put each group in the load groups map by group name
Iterator groupNames = metadata.getLoadGroups().keySet().iterator();
while (groupNames.hasNext()) {
// get the group name
String groupName = (String) groupNames.next();
boolean[] loadGroup = loadGroupMask(groupName, defaultLockGroupMask);
loadGroupMasks.put(groupName, loadGroup);
}
loadGroupMasks = Collections.unmodifiableMap(loadGroupMasks);
}
private JDBCCMPFieldBridge createCMPField(
JDBCEntityMetaData metadata, JDBCCMPFieldMetaData cmpFieldMetaData) {
JDBCCMPFieldBridge cmpField;
if (metadata.isCMP1x()) cmpField = new JDBCCMP1xFieldBridge(manager, cmpFieldMetaData);
else cmpField = new JDBCCMP2xFieldBridge(manager, cmpFieldMetaData);
return cmpField;
}
private void loadEagerLoadGroup(JDBCEntityMetaData metadata) {
String eagerLoadGroupName = metadata.getEagerLoadGroup();
if (eagerLoadGroupName == null) {
// can be null in case of <eager-load-group/>, meaning empty load group
eagerLoadGroupMask = defaultLockGroupMask;
} else eagerLoadGroupMask = (boolean[]) loadGroupMasks.get(eagerLoadGroupName);
}
private void loadCMPFields(JDBCEntityMetaData metadata) {
// only non pk fields are stored here at first and then later
// the pk fields are added to the front (makes sql easier to read)
List<JDBCCMPFieldMetaData> cmpFieldsMD = metadata.getCMPFields();
List<JDBCCMPFieldBridge> cmpFieldsList = new ArrayList<JDBCCMPFieldBridge>();
// primary key cmp fields
List<JDBCCMPFieldBridge> pkFieldsList = new ArrayList<JDBCCMPFieldBridge>();
// create pk fields
for (JDBCCMPFieldMetaData fieldMD : cmpFieldsMD) {
if (fieldMD.isPrimaryKeyMember()) {
pkFieldsList.add(createCMPField(metadata, fieldMD));
}
}
for (JDBCCMPFieldMetaData fieldMD : cmpFieldsMD) {
if (!fieldMD.isPrimaryKeyMember()) {
cmpFieldsList.add(createCMPField(metadata, fieldMD));
}
}
// save the pk fields in the pk field array
primaryKeyFields = pkFieldsList.toArray(new JDBCCMPFieldBridge[pkFieldsList.size()]);
// add the pk fields to the front of the cmp list, per guarantee above
cmpFields = cmpFieldsList.toArray(new JDBCCMPFieldBridge[cmpFieldsList.size()]);
}
private void loadLazyLoadGroups(JDBCEntityMetaData metadata) {
List lazyGroupNames = metadata.getLazyLoadGroups();
lazyLoadGroupMasks = new ArrayList(lazyGroupNames.size());
for (Iterator lazyLoadGroupNames = lazyGroupNames.iterator(); lazyLoadGroupNames.hasNext(); ) {
String lazyLoadGroupName = (String) lazyLoadGroupNames.next();
lazyLoadGroupMasks.add(loadGroupMasks.get(lazyLoadGroupName));
}
lazyLoadGroupMasks = Collections.unmodifiableList(lazyLoadGroupMasks);
}
private void loadSelectors(JDBCEntityMetaData metadata) {
// Don't know if this is the best way to do this. Another way would be
// to delegate selectors to the JDBCFindEntitiesCommand, but this is
// easier now.
selectorsByMethod = new HashMap(metadata.getQueries().size());
Iterator definedFinders = manager.getMetaData().getQueries().iterator();
while (definedFinders.hasNext()) {
JDBCQueryMetaData q = (JDBCQueryMetaData) definedFinders.next();
if (q.getMethod().getName().startsWith("ejbSelect"))
selectorsByMethod.put(q.getMethod(), new JDBCSelectorBridge(manager, q));
}
selectorsByMethod = Collections.unmodifiableMap(selectorsByMethod);
}
private boolean[] loadGroupMask(String groupName, boolean[] defaultGroup) {
List<String> fieldNames = metadata.getLoadGroup(groupName);
boolean[] group = new boolean[tableFields.length];
if (defaultGroup != null) System.arraycopy(defaultGroup, 0, group, 0, group.length);
for (String fieldName : fieldNames) {
JDBCFieldBridge field = (JDBCFieldBridge) getFieldByName(fieldName);
if (field == null) throw MESSAGES.fieldNotFound(fieldName, getEntityName());
if (field instanceof JDBCCMRFieldBridge) {
JDBCCMRFieldBridge cmrField = (JDBCCMRFieldBridge) field;
if (cmrField.hasForeignKey()) {
JDBCCMPFieldBridge[] fkFields = (JDBCCMPFieldBridge[]) cmrField.getForeignKeyFields();
for (int i = 0; i < fkFields.length; ++i) {
group[fkFields[i].getTableIndex()] = true;
}
} else {
throw MESSAGES.onlyCmrFieldsWithFkInLoadGroup(fieldName);
}
} else {
group[((JDBCCMPFieldBridge) field).getTableIndex()] = true;
}
}
return group;
}
public int getFetchSize() {
return metadata.getFetchSize();
}
public int getListCacheMax() {
return metadata.getListCacheMax();
}
public Class getLocalInterface() {
return metadata.getLocalClass();
}
public Class getRemoteInterface() {
return metadata.getRemoteClass();
}
public String getAbstractSchemaName() {
return metadata.getAbstractSchemaName();
}
public String getEntityName() {
return metadata.getName();
}
public void init() throws Exception {
dataSource = manager.getDataSource(metadata.getDataSourceName());
qualifiedTableName = SQLUtil.fixTableName(metadata.getDefaultTableName(), dataSource);
int dotIndex = qualifiedTableName.indexOf('.');
tableName = dotIndex == -1 ? qualifiedTableName : qualifiedTableName.substring(dotIndex + 1);
// CMP fields
loadCMPFields(metadata);
// CMR fields
loadCMRFields(metadata);
// create locking field
JDBCOptimisticLockingMetaData lockMetaData = metadata.getOptimisticLocking();
if (lockMetaData != null && lockMetaData.getLockingField() != null) {
JDBCOptimisticLockingMetaData.LockingStrategy strategy = lockMetaData.getLockingStrategy();
JDBCCMPFieldMetaData versionMD = lockMetaData.getLockingField();
versionField = getCMPFieldByName(versionMD.getFieldName());
boolean hidden = versionField == null;
switch (strategy) {
case VERSION_COLUMN_STRATEGY:
{
if (hidden) versionField = new JDBCLongVersionFieldBridge(manager, versionMD);
else versionField = new JDBCLongVersionFieldBridge((JDBCCMP2xFieldBridge) versionField);
break;
}
case TIMESTAMP_COLUMN_STRATEGY:
{
if (hidden) versionField = new JDBCTimestampVersionFieldBridge(manager, versionMD);
else
versionField =
new JDBCTimestampVersionFieldBridge((JDBCCMP2xFieldBridge) versionField);
break;
}
case KEYGENERATOR_COLUMN_STRATEGY:
{
if (hidden)
versionField =
new JDBCKeyGenVersionFieldBridge(
manager, versionMD, lockMetaData.getKeyGeneratorFactory());
else
versionField =
new JDBCKeyGenVersionFieldBridge(
(JDBCCMP2xFieldBridge) versionField, lockMetaData.getKeyGeneratorFactory());
break;
}
}
if (hidden) addCMPField(versionField);
else tableFields[versionField.getTableIndex()] = versionField;
}
// audit fields
JDBCAuditMetaData auditMetaData = metadata.getAudit();
if (auditMetaData != null) {
JDBCCMPFieldMetaData auditField = auditMetaData.getCreatedPrincipalField();
if (auditField != null) {
createdPrincipalField = getCMPFieldByName(auditField.getFieldName());
if (createdPrincipalField == null) {
createdPrincipalField = new JDBCCMP2xFieldBridge(manager, auditField);
addCMPField(createdPrincipalField);
}
} else {
createdPrincipalField = null;
}
auditField = auditMetaData.getCreatedTimeField();
if (auditField != null) {
createdTimeField = getCMPFieldByName(auditField.getFieldName());
if (createdTimeField == null) {
createdTimeField =
new JDBCCMP2xFieldBridge(manager, auditField, JDBCTypeFactory.EQUALS, false);
addCMPField(createdTimeField);
} else {
// just to override state factory and check-dirty-after-get
createdTimeField =
new JDBCCMP2xFieldBridge(
(JDBCCMP2xFieldBridge) createdTimeField, JDBCTypeFactory.EQUALS, false);
tableFields[createdTimeField.getTableIndex()] = createdTimeField;
}
} else {
createdTimeField = null;
}
auditField = auditMetaData.getUpdatedPrincipalField();
if (auditField != null) {
updatedPrincipalField = getCMPFieldByName(auditField.getFieldName());
if (updatedPrincipalField == null) {
updatedPrincipalField = new JDBCCMP2xUpdatedPrincipalFieldBridge(manager, auditField);
addCMPField(updatedPrincipalField);
} else {
updatedPrincipalField =
new JDBCCMP2xUpdatedPrincipalFieldBridge(
(JDBCCMP2xFieldBridge) updatedPrincipalField);
tableFields[updatedPrincipalField.getTableIndex()] = updatedPrincipalField;
}
} else {
updatedPrincipalField = null;
}
auditField = auditMetaData.getUpdatedTimeField();
if (auditField != null) {
updatedTimeField = getCMPFieldByName(auditField.getFieldName());
if (updatedTimeField == null) {
updatedTimeField = new JDBCCMP2xUpdatedTimeFieldBridge(manager, auditField);
addCMPField(updatedTimeField);
} else {
updatedTimeField =
new JDBCCMP2xUpdatedTimeFieldBridge((JDBCCMP2xFieldBridge) updatedTimeField);
tableFields[updatedTimeField.getTableIndex()] = updatedTimeField;
}
} else {
updatedTimeField = null;
}
}
// ejbSelect methods
loadSelectors(metadata);
}
