use of org.datanucleus.Transaction in project datanucleus-rdbms by datanucleus.
the class FKListStore method listIterator.
/**
* Accessor for an iterator through the list elements.
* @param ownerOP ObjectProvider for the owner.
* @param startIdx The start index in the list (only for indexed lists)
* @param endIdx The end index in the list (only for indexed lists)
* @return The List Iterator
*/
protected ListIterator<E> listIterator(ObjectProvider ownerOP, int startIdx, int endIdx) {
ExecutionContext ec = ownerOP.getExecutionContext();
Transaction tx = ec.getTransaction();
if (elementInfo == null || elementInfo.length == 0) {
return null;
}
// Generate the statement. Note that this is not cached since depends on the current FetchPlan and other things
IteratorStatement iterStmt = getIteratorStatement(ownerOP.getExecutionContext(), ec.getFetchPlan(), true, startIdx, endIdx);
SelectStatement sqlStmt = iterStmt.getSelectStatement();
StatementClassMapping resultMapping = iterStmt.getStatementClassMapping();
// Input parameter(s) - the owner
int inputParamNum = 1;
StatementMappingIndex ownerIdx = new StatementMappingIndex(ownerMapping);
if (sqlStmt.getNumberOfUnions() > 0) {
// Add parameter occurrence for each union of statement
for (int j = 0; j < sqlStmt.getNumberOfUnions() + 1; j++) {
int[] paramPositions = new int[ownerMapping.getNumberOfDatastoreMappings()];
for (int k = 0; k < ownerMapping.getNumberOfDatastoreMappings(); k++) {
paramPositions[k] = inputParamNum++;
}
ownerIdx.addParameterOccurrence(paramPositions);
}
} else {
int[] paramPositions = new int[ownerMapping.getNumberOfDatastoreMappings()];
for (int k = 0; k < ownerMapping.getNumberOfDatastoreMappings(); k++) {
paramPositions[k] = inputParamNum++;
}
ownerIdx.addParameterOccurrence(paramPositions);
}
if (tx.getSerializeRead() != null && tx.getSerializeRead()) {
sqlStmt.addExtension(SQLStatement.EXTENSION_LOCK_FOR_UPDATE, true);
}
String stmt = sqlStmt.getSQLText().toSQL();
try {
ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
SQLController sqlControl = storeMgr.getSQLController();
try {
// Create the statement
PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
// Set the owner
ObjectProvider stmtOwnerOP = BackingStoreHelper.getOwnerObjectProviderForBackingStore(ownerOP);
int numParams = ownerIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
ownerIdx.getMapping().setObject(ec, ps, ownerIdx.getParameterPositionsForOccurrence(paramInstance), stmtOwnerOP.getObject());
}
try {
ResultSet rs = sqlControl.executeStatementQuery(ec, mconn, stmt, ps);
try {
ResultObjectFactory rof = null;
if (elementsAreEmbedded || elementsAreSerialised) {
throw new NucleusException("Cannot have FK set with non-persistent objects");
}
rof = new PersistentClassROF(ec, rs, false, resultMapping, elementCmd, clr.classForName(elementType));
return new ListStoreIterator(ownerOP, rs, rof, this);
} finally {
rs.close();
}
} finally {
sqlControl.closeStatement(mconn, ps);
}
} finally {
mconn.release();
}
} catch (SQLException | MappedDatastoreException e) {
throw new NucleusDataStoreException(Localiser.msg("056006", stmt), e);
}
}
use of org.datanucleus.Transaction in project datanucleus-rdbms by datanucleus.
the class FKMapStore method getValue.
/**
* Method to retrieve a value from the Map given the key.
* @param ownerOP ObjectProvider for the owner of the map.
* @param key The key to retrieve the value for.
* @return The value for this key
* @throws NoSuchElementException if the key was not found
*/
protected V getValue(ObjectProvider ownerOP, Object key) throws NoSuchElementException {
if (!validateKeyForReading(ownerOP, key)) {
return null;
}
ExecutionContext ec = ownerOP.getExecutionContext();
if (getStmtLocked == null) {
synchronized (// Make sure this completes in case another thread needs the same info
this) {
// Generate the statement, and statement mapping/parameter information
SQLStatement sqlStmt = getSQLStatementForGet(ownerOP);
getStmtUnlocked = sqlStmt.getSQLText().toSQL();
sqlStmt.addExtension(SQLStatement.EXTENSION_LOCK_FOR_UPDATE, true);
getStmtLocked = sqlStmt.getSQLText().toSQL();
}
}
Transaction tx = ec.getTransaction();
String stmt = (tx.getSerializeRead() != null && tx.getSerializeRead() ? getStmtLocked : getStmtUnlocked);
Object value = null;
try {
ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
SQLController sqlControl = storeMgr.getSQLController();
try {
// Create the statement and supply owner/key params
PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
StatementMappingIndex ownerIdx = getMappingParams.getMappingForParameter("owner");
int numParams = ownerIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
ownerIdx.getMapping().setObject(ec, ps, ownerIdx.getParameterPositionsForOccurrence(paramInstance), ownerOP.getObject());
}
StatementMappingIndex keyIdx = getMappingParams.getMappingForParameter("key");
numParams = keyIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
keyIdx.getMapping().setObject(ec, ps, keyIdx.getParameterPositionsForOccurrence(paramInstance), key);
}
try {
ResultSet rs = sqlControl.executeStatementQuery(ec, mconn, stmt, ps);
try {
boolean found = rs.next();
if (!found) {
throw new NoSuchElementException();
}
if (valuesAreEmbedded || valuesAreSerialised) {
int[] param = new int[valueMapping.getNumberOfDatastoreMappings()];
for (int i = 0; i < param.length; ++i) {
param[i] = i + 1;
}
if (valueMapping instanceof SerialisedPCMapping || valueMapping instanceof SerialisedReferenceMapping || valueMapping instanceof EmbeddedKeyPCMapping) {
// Value = Serialised
value = valueMapping.getObject(ec, rs, param, ownerOP, ((JoinTable) mapTable).getOwnerMemberMetaData().getAbsoluteFieldNumber());
} else {
// Value = Non-PC
value = valueMapping.getObject(ec, rs, param);
}
} else if (valueMapping instanceof ReferenceMapping) {
// Value = Reference (Interface/Object)
int[] param = new int[valueMapping.getNumberOfDatastoreMappings()];
for (int i = 0; i < param.length; ++i) {
param[i] = i + 1;
}
value = valueMapping.getObject(ec, rs, param);
} else {
// Value = PC
ResultObjectFactory rof = new PersistentClassROF(ec, rs, false, getMappingDef, valueCmd, clr.classForName(valueType));
value = rof.getObject();
}
JDBCUtils.logWarnings(rs);
} finally {
rs.close();
}
} finally {
sqlControl.closeStatement(mconn, ps);
}
} finally {
mconn.release();
}
} catch (SQLException e) {
throw new NucleusDataStoreException(Localiser.msg("056014", stmt), e);
}
return (V) value;
}
use of org.datanucleus.Transaction in project datanucleus-rdbms by datanucleus.
the class JoinListStore method listIterator.
/**
* Accessor for an iterator through the list elements.
* @param ownerOP ObjectProvider for the owner
* @param startIdx The start point in the list (only for indexed lists).
* @param endIdx End index in the list (only for indexed lists).
* @return The List Iterator
*/
protected ListIterator<E> listIterator(ObjectProvider ownerOP, int startIdx, int endIdx) {
ExecutionContext ec = ownerOP.getExecutionContext();
Transaction tx = ec.getTransaction();
// Generate the statement. Note that this is not cached since depends on the current FetchPlan and other things
IteratorStatement iterStmt = getIteratorStatement(ownerOP.getExecutionContext(), ec.getFetchPlan(), true, startIdx, endIdx);
SelectStatement sqlStmt = iterStmt.getSelectStatement();
StatementClassMapping resultMapping = iterStmt.getStatementClassMapping();
// Input parameter(s) - the owner
int inputParamNum = 1;
StatementMappingIndex ownerIdx = new StatementMappingIndex(ownerMapping);
if (sqlStmt.getNumberOfUnions() > 0) {
// Add parameter occurrence for each union of statement
for (int j = 0; j < sqlStmt.getNumberOfUnions() + 1; j++) {
int[] paramPositions = new int[ownerMapping.getNumberOfDatastoreMappings()];
for (int k = 0; k < paramPositions.length; k++) {
paramPositions[k] = inputParamNum++;
}
ownerIdx.addParameterOccurrence(paramPositions);
}
} else {
int[] paramPositions = new int[ownerMapping.getNumberOfDatastoreMappings()];
for (int k = 0; k < paramPositions.length; k++) {
paramPositions[k] = inputParamNum++;
}
ownerIdx.addParameterOccurrence(paramPositions);
}
if (tx.getSerializeRead() != null && tx.getSerializeRead()) {
sqlStmt.addExtension(SQLStatement.EXTENSION_LOCK_FOR_UPDATE, true);
}
String stmt = sqlStmt.getSQLText().toSQL();
try {
ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
SQLController sqlControl = storeMgr.getSQLController();
try {
// Create the statement
PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
// Set the owner
ObjectProvider stmtOwnerOP = BackingStoreHelper.getOwnerObjectProviderForBackingStore(ownerOP);
int numParams = ownerIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
ownerIdx.getMapping().setObject(ec, ps, ownerIdx.getParameterPositionsForOccurrence(paramInstance), stmtOwnerOP.getObject());
}
try {
ResultSet rs = sqlControl.executeStatementQuery(ec, mconn, stmt, ps);
try {
if (elementsAreEmbedded || elementsAreSerialised) {
// No ResultObjectFactory needed - handled by SetStoreIterator
return new ListStoreIterator(ownerOP, rs, null, this);
} else if (elementMapping instanceof ReferenceMapping) {
// No ResultObjectFactory needed - handled by SetStoreIterator
return new ListStoreIterator(ownerOP, rs, null, this);
} else {
ResultObjectFactory rof = new PersistentClassROF(ec, rs, false, resultMapping, elementCmd, clr.classForName(elementType));
return new ListStoreIterator(ownerOP, rs, rof, this);
}
} finally {
rs.close();
}
} finally {
sqlControl.closeStatement(mconn, ps);
}
} finally {
mconn.release();
}
} catch (SQLException | MappedDatastoreException e) {
throw new NucleusDataStoreException(Localiser.msg("056006", stmt), e);
}
}
use of org.datanucleus.Transaction in project datanucleus-rdbms by datanucleus.
the class JoinMapStore method getValue.
/**
* Method to retrieve a value from the Map given the key.
* @param ownerOP ObjectProvider for the owner of the map.
* @param key The key to retrieve the value for.
* @return The value for this key
* @throws NoSuchElementException if the value for the key was not found
*/
protected V getValue(ObjectProvider ownerOP, Object key) throws NoSuchElementException {
if (!validateKeyForReading(ownerOP, key)) {
return null;
}
ExecutionContext ec = ownerOP.getExecutionContext();
if (getStmtLocked == null) {
synchronized (// Make sure this completes in case another thread needs the same info
this) {
// Generate the statement, and statement mapping/parameter information
SQLStatement sqlStmt = getSQLStatementForGet(ownerOP);
getStmtUnlocked = sqlStmt.getSQLText().toSQL();
sqlStmt.addExtension(SQLStatement.EXTENSION_LOCK_FOR_UPDATE, true);
getStmtLocked = sqlStmt.getSQLText().toSQL();
}
}
Transaction tx = ec.getTransaction();
String stmt = (tx.getSerializeRead() != null && tx.getSerializeRead() ? getStmtLocked : getStmtUnlocked);
Object value = null;
try {
ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
SQLController sqlControl = storeMgr.getSQLController();
try {
// Create the statement and supply owner/key params
PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
StatementMappingIndex ownerIdx = getMappingParams.getMappingForParameter("owner");
int numParams = ownerIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
ownerIdx.getMapping().setObject(ec, ps, ownerIdx.getParameterPositionsForOccurrence(paramInstance), ownerOP.getObject());
}
StatementMappingIndex keyIdx = getMappingParams.getMappingForParameter("key");
numParams = keyIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
keyIdx.getMapping().setObject(ec, ps, keyIdx.getParameterPositionsForOccurrence(paramInstance), key);
}
try {
ResultSet rs = sqlControl.executeStatementQuery(ec, mconn, stmt, ps);
try {
boolean found = rs.next();
if (!found) {
throw new NoSuchElementException();
}
if (valuesAreEmbedded || valuesAreSerialised) {
int[] param = new int[valueMapping.getNumberOfDatastoreMappings()];
for (int i = 0; i < param.length; ++i) {
param[i] = i + 1;
}
if (valueMapping instanceof SerialisedPCMapping || valueMapping instanceof SerialisedReferenceMapping || valueMapping instanceof EmbeddedKeyPCMapping) {
// Value = Serialised
int ownerFieldNumber = ((JoinTable) mapTable).getOwnerMemberMetaData().getAbsoluteFieldNumber();
value = valueMapping.getObject(ec, rs, param, ownerOP, ownerFieldNumber);
} else {
// Value = Non-PC
value = valueMapping.getObject(ec, rs, param);
}
} else if (valueMapping instanceof ReferenceMapping) {
// Value = Reference (Interface/Object)
int[] param = new int[valueMapping.getNumberOfDatastoreMappings()];
for (int i = 0; i < param.length; ++i) {
param[i] = i + 1;
}
value = valueMapping.getObject(ec, rs, param);
} else {
// Value = PC
ResultObjectFactory rof = new PersistentClassROF(ec, rs, false, getMappingDef, valueCmd, clr.classForName(valueType));
value = rof.getObject();
}
JDBCUtils.logWarnings(rs);
} finally {
rs.close();
}
} finally {
sqlControl.closeStatement(mconn, ps);
}
} finally {
mconn.release();
}
} catch (SQLException e) {
throw new NucleusDataStoreException(Localiser.msg("056014", stmt), e);
}
return (V) value;
}
use of org.datanucleus.Transaction in project datanucleus-rdbms by datanucleus.
the class MapEntrySetStore method iterator.
/**
* Method returning an iterator across the entries in the map for this owner object.
* @param ownerOP ObjectProvider of the owning object
* @return The iterator for the entries (<pre>map.entrySet().iterator()</pre>).
*/
public Iterator<Map.Entry<K, V>> iterator(ObjectProvider ownerOP) {
ExecutionContext ec = ownerOP.getExecutionContext();
if (iteratorStmtLocked == null) {
synchronized (// Make sure this completes in case another thread needs the same info
this) {
// Generate the statement, and statement mapping/parameter information
SQLStatement sqlStmt = getSQLStatementForIterator(ownerOP);
iteratorStmtUnlocked = sqlStmt.getSQLText().toSQL();
sqlStmt.addExtension(SQLStatement.EXTENSION_LOCK_FOR_UPDATE, true);
iteratorStmtLocked = sqlStmt.getSQLText().toSQL();
}
}
Transaction tx = ec.getTransaction();
String stmt = (tx.getSerializeRead() != null && tx.getSerializeRead() ? iteratorStmtLocked : iteratorStmtUnlocked);
try {
ManagedConnection mconn = storeMgr.getConnectionManager().getConnection(ec);
SQLController sqlControl = storeMgr.getSQLController();
try {
// Create the statement and set the owner
PreparedStatement ps = sqlControl.getStatementForQuery(mconn, stmt);
StatementMappingIndex ownerIdx = iteratorMappingParams.getMappingForParameter("owner");
int numParams = ownerIdx.getNumberOfParameterOccurrences();
for (int paramInstance = 0; paramInstance < numParams; paramInstance++) {
ownerIdx.getMapping().setObject(ec, ps, ownerIdx.getParameterPositionsForOccurrence(paramInstance), ownerOP.getObject());
}
try {
ResultSet rs = sqlControl.executeStatementQuery(ec, mconn, stmt, ps);
try {
return new SetIterator(ownerOP, this, ownerMemberMetaData, rs, iteratorKeyResultCols, iteratorValueResultCols) {
protected boolean next(Object rs) throws MappedDatastoreException {
try {
return ((ResultSet) rs).next();
} catch (SQLException e) {
throw new MappedDatastoreException("SQLException", e);
}
}
};
} finally {
rs.close();
}
} finally {
sqlControl.closeStatement(mconn, ps);
}
} finally {
mconn.release();
}
} catch (SQLException e) {
throw new NucleusDataStoreException("Iteration request failed: " + stmt, e);
} catch (MappedDatastoreException e) {
throw new NucleusDataStoreException("Iteration request failed: " + stmt, e);
}
}
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