/**
* Accessor for the primary key for this table. Overrides the method in TableImpl to add on any
* specification of PK name in the <join> metadata.
*
* @return The primary key.
*/
public PrimaryKey getPrimaryKey() {
PrimaryKey pk = super.getPrimaryKey();
if (mmd.getJoinMetaData() != null) {
PrimaryKeyMetaData pkmd = mmd.getJoinMetaData().getPrimaryKeyMetaData();
if (pkmd != null && pkmd.getName() != null) {
pk.setName(pkmd.getName());
}
}
return pk;
}
/**
* Convenience method to apply the user specification of <primary-key> columns
*
* @param pkmd MetaData for the primary key
*/
protected void applyUserPrimaryKeySpecification(PrimaryKeyMetaData pkmd) {
ColumnMetaData[] pkCols = pkmd.getColumnMetaData();
for (int i = 0; i < pkCols.length; i++) {
String colName = pkCols[i].getName();
boolean found = false;
for (int j = 0; j < ownerMapping.getNumberOfDatastoreMappings(); j++) {
if (ownerMapping
.getDatastoreMapping(j)
.getColumn()
.getIdentifier()
.getName()
.equals(colName)) {
ownerMapping.getDatastoreMapping(j).getColumn().setPrimaryKey();
found = true;
}
}
if (!found) {
for (int j = 0; j < keyMapping.getNumberOfDatastoreMappings(); j++) {
if (keyMapping
.getDatastoreMapping(j)
.getColumn()
.getIdentifier()
.getName()
.equals(colName)) {
keyMapping.getDatastoreMapping(j).getColumn().setPrimaryKey();
found = true;
}
}
}
if (!found) {
for (int j = 0; j < valueMapping.getNumberOfDatastoreMappings(); j++) {
if (valueMapping
.getDatastoreMapping(j)
.getColumn()
.getIdentifier()
.getName()
.equals(colName)) {
valueMapping.getDatastoreMapping(j).getColumn().setPrimaryKey();
found = true;
}
}
}
if (!found) {
throw new NucleusUserException(Localiser.msg("057040", toString(), colName));
}
}
}
/**
* Method to initialise the table definition.
*
* @param clr The ClassLoaderResolver
*/
public void initialize(ClassLoaderResolver clr) {
assertIsUninitialized();
MapMetaData mapmd = mmd.getMap();
if (mapmd == null) {
throw new NucleusUserException(Localiser.msg("057017", mmd));
}
PrimaryKeyMetaData pkmd =
(mmd.getJoinMetaData() != null ? mmd.getJoinMetaData().getPrimaryKeyMetaData() : null);
boolean pkColsSpecified = (pkmd != null && pkmd.getColumnMetaData() != null);
boolean pkRequired = requiresPrimaryKey();
// Add owner mapping
ColumnMetaData[] ownerColmd = null;
if (mmd.getJoinMetaData() != null
&& mmd.getJoinMetaData().getColumnMetaData() != null
&& mmd.getJoinMetaData().getColumnMetaData().length > 0) {
// Column mappings defined at this side (1-N, M-N)
// When specified at this side they use the <join> tag
ownerColmd = mmd.getJoinMetaData().getColumnMetaData();
}
ownerMapping =
ColumnCreator.createColumnsForJoinTables(
clr.classForName(ownerType),
mmd,
ownerColmd,
storeMgr,
this,
pkRequired,
false,
FieldRole.ROLE_OWNER,
clr);
if (NucleusLogger.DATASTORE.isDebugEnabled()) {
logMapping(mmd.getFullFieldName() + ".[OWNER]", ownerMapping);
}
String keyValueFieldName =
(mmd.getKeyMetaData() != null ? mmd.getKeyMetaData().getMappedBy() : null);
String valueKeyFieldName =
(mmd.getValueMetaData() != null ? mmd.getValueMetaData().getMappedBy() : null);
// Add key mapping
boolean keyPC = (mmd.hasMap() && mmd.getMap().keyIsPersistent());
Class keyCls = clr.classForName(mapmd.getKeyType());
if (keyValueFieldName != null && isEmbeddedValuePC()) {
// Added in value code
} else if (isSerialisedKey()
|| isEmbeddedKeyPC()
|| (isEmbeddedKey() && !keyPC)
|| ClassUtils.isReferenceType(keyCls)) {
// Key = PC(embedded), PC(serialised), Non-PC(serialised), Non-PC(embedded), Reference
keyMapping = storeMgr.getMappingManager().getMapping(this, mmd, clr, FieldRole.ROLE_MAP_KEY);
if (Boolean.TRUE.equals(mmd.getContainer().allowNulls())) {
// Make all key col(s) nullable so we can store null elements
for (int i = 0; i < keyMapping.getNumberOfDatastoreMappings(); i++) {
Column elementCol = keyMapping.getDatastoreMapping(i).getColumn();
elementCol.setNullable(true);
}
}
if (NucleusLogger.DATASTORE.isDebugEnabled()) {
logMapping(mmd.getFullFieldName() + ".[KEY]", keyMapping);
}
if (valueKeyFieldName != null && isEmbeddedKeyPC()) {
// Key (PC) is embedded and value is a field of the key
EmbeddedKeyPCMapping embMapping = (EmbeddedKeyPCMapping) keyMapping;
valueMapping = embMapping.getJavaTypeMapping(valueKeyFieldName);
}
} else {
// Key = PC
ColumnMetaData[] keyColmd = null;
KeyMetaData keymd = mmd.getKeyMetaData();
if (keymd != null
&& keymd.getColumnMetaData() != null
&& keymd.getColumnMetaData().length > 0) {
// Column mappings defined at this side (1-N, M-N)
keyColmd = keymd.getColumnMetaData();
}
keyMapping =
ColumnCreator.createColumnsForJoinTables(
keyCls, mmd, keyColmd, storeMgr, this, false, false, FieldRole.ROLE_MAP_KEY, clr);
if (mmd.getContainer().allowNulls() == Boolean.TRUE) {
// Make all key col(s) nullable so we can store null elements
for (int i = 0; i < keyMapping.getNumberOfDatastoreMappings(); i++) {
Column elementCol = keyMapping.getDatastoreMapping(i).getColumn();
elementCol.setNullable(true);
}
}
if (NucleusLogger.DATASTORE.isDebugEnabled()) {
logMapping(mmd.getFullFieldName() + ".[KEY]", keyMapping);
}
}
// Add value mapping
boolean valuePC = (mmd.hasMap() && mmd.getMap().valueIsPersistent());
Class valueCls = clr.classForName(mapmd.getValueType());
if (valueKeyFieldName != null && isEmbeddedKeyPC()) {
// Added in key code
} else if (isSerialisedValue()
|| isEmbeddedValuePC()
|| (isEmbeddedValue() && !valuePC)
|| ClassUtils.isReferenceType(valueCls)) {
// Value = PC(embedded), PC(serialised), Non-PC(serialised), Non-PC(embedded), Reference
valueMapping =
storeMgr.getMappingManager().getMapping(this, mmd, clr, FieldRole.ROLE_MAP_VALUE);
if (mmd.getContainer().allowNulls() == Boolean.TRUE) {
// Make all value col(s) nullable so we can store null elements
for (int i = 0; i < valueMapping.getNumberOfDatastoreMappings(); i++) {
Column elementCol = valueMapping.getDatastoreMapping(i).getColumn();
elementCol.setNullable(true);
}
}
if (NucleusLogger.DATASTORE.isDebugEnabled()) {
logMapping(mmd.getFullFieldName() + ".[VALUE]", valueMapping);
}
if (keyValueFieldName != null && isEmbeddedValuePC()) {
// Value (PC) is embedded and key is a field of the value
EmbeddedValuePCMapping embMapping = (EmbeddedValuePCMapping) valueMapping;
keyMapping = embMapping.getJavaTypeMapping(keyValueFieldName);
}
} else {
// Value = PC
ColumnMetaData[] valueColmd = null;
ValueMetaData valuemd = mmd.getValueMetaData();
if (valuemd != null
&& valuemd.getColumnMetaData() != null
&& valuemd.getColumnMetaData().length > 0) {
// Column mappings defined at this side (1-N, M-N)
valueColmd = valuemd.getColumnMetaData();
}
valueMapping =
ColumnCreator.createColumnsForJoinTables(
clr.classForName(mapmd.getValueType()),
mmd,
valueColmd,
storeMgr,
this,
false,
true,
FieldRole.ROLE_MAP_VALUE,
clr);
if (mmd.getContainer().allowNulls() == Boolean.TRUE) {
// Make all value col(s) nullable so we can store null elements
for (int i = 0; i < valueMapping.getNumberOfDatastoreMappings(); i++) {
Column elementCol = valueMapping.getDatastoreMapping(i).getColumn();
elementCol.setNullable(true);
}
}
if (NucleusLogger.DATASTORE.isDebugEnabled()) {
logMapping(mmd.getFullFieldName() + ".[VALUE]", valueMapping);
}
}
// Add order mapping if required
boolean orderRequired = false;
if (mmd.getOrderMetaData() != null) {
// User requested order column so add one
orderRequired = true;
} else if (requiresPrimaryKey() && !pkColsSpecified) {
// PK is required so maybe need to add an index to form the PK
if (isEmbeddedKeyPC()) {
if (mmd.getMap().getKeyClassMetaData(clr, storeMgr.getMetaDataManager()).getIdentityType()
!= IdentityType.APPLICATION) {
// Embedded key PC with datastore id so we need an index to form the PK
orderRequired = true;
}
} else if (isSerialisedKey()) {
// Serialised key, so need an index to form the PK
orderRequired = true;
} else if (keyMapping instanceof ReferenceMapping) {
// ReferenceMapping, so have order if more than 1 implementation
ReferenceMapping refMapping = (ReferenceMapping) keyMapping;
if (refMapping.getJavaTypeMapping().length > 1) {
orderRequired = true;
}
} else if (!(keyMapping instanceof PersistableMapping)) {
// Non-PC, so depends if the key column can be used as part of a PK
// TODO This assumes the keyMapping has a single column but what if it is Color with 4 cols?
Column elementCol = keyMapping.getDatastoreMapping(0).getColumn();
if (!storeMgr.getDatastoreAdapter().isValidPrimaryKeyType(elementCol.getJdbcType())) {
// Not possible to use this Non-PC type as part of the PK
orderRequired = true;
}
}
}
if (orderRequired) {
// Order/Adapter (index) column is required (integer based)
ColumnMetaData orderColmd = null;
if (mmd.getOrderMetaData() != null
&& mmd.getOrderMetaData().getColumnMetaData() != null
&& mmd.getOrderMetaData().getColumnMetaData().length > 0) {
// Specified "order" column info
orderColmd = mmd.getOrderMetaData().getColumnMetaData()[0];
if (orderColmd.getName() == null) {
// No column name so use default
orderColmd = new ColumnMetaData(orderColmd);
DatastoreIdentifier id = storeMgr.getIdentifierFactory().newIndexFieldIdentifier(mmd);
orderColmd.setName(id.getName());
}
} else {
// No column name so use default
DatastoreIdentifier id = storeMgr.getIdentifierFactory().newIndexFieldIdentifier(mmd);
orderColmd = new ColumnMetaData();
orderColmd.setName(id.getName());
}
orderMapping =
storeMgr
.getMappingManager()
.getMapping(int.class); // JDO2 spec [18.5] order column is assumed to be "int"
ColumnCreator.createIndexColumn(
orderMapping, storeMgr, clr, this, orderColmd, pkRequired && !pkColsSpecified);
if (NucleusLogger.DATASTORE.isDebugEnabled()) {
logMapping(mmd.getFullFieldName() + ".[ORDER]", orderMapping);
}
}
// Define primary key of the join table (if any)
if (pkRequired) {
if (pkColsSpecified) {
// Apply the users PK specification
applyUserPrimaryKeySpecification(pkmd);
} else {
// Define PK using internal rules
if (orderRequired) {
// Order column specified so owner+order are the PK
orderMapping.getDatastoreMapping(0).getColumn().setPrimaryKey();
} else {
// No order column specified so owner+key are the PK
for (int i = 0; i < keyMapping.getNumberOfDatastoreMappings(); i++) {
keyMapping.getDatastoreMapping(i).getColumn().setPrimaryKey();
}
}
}
}
if (NucleusLogger.DATASTORE_SCHEMA.isDebugEnabled()) {
NucleusLogger.DATASTORE_SCHEMA.debug(Localiser.msg("057023", this));
}
storeMgr.registerTableInitialized(this);
state = TABLE_STATE_INITIALIZED;
}