public KVPair writeDirectIndex(LocatedRow locatedRow) throws IOException, StandardException {
assert locatedRow != null : "locatedRow passed in is null";
ExecRow execRow = locatedRow.getRow();
getSerializers(execRow);
EntryAccumulator keyAccumulator = getKeyAccumulator();
keyAccumulator.reset();
boolean hasNullKeyFields = false;
for (int i = 0; i < execRow.nColumns(); i++) {
if (execRow.getColumn(i + 1) == null || execRow.getColumn(i + 1).isNull()) {
hasNullKeyFields = true;
accumulateNull(keyAccumulator, i, indexFormatIds[i]);
} else {
byte[] data = serializers[i].encodeDirect(execRow.getColumn(i + 1), false);
accumulate(
keyAccumulator, i, indexFormatIds[i], index.getDescColumns(i), data, 0, data.length);
}
}
// add the row key to the end of the index key
byte[] srcRowKey = Encoding.encodeBytesUnsorted(locatedRow.getRowLocation().getBytes());
EntryEncoder rowEncoder = getRowEncoder();
MultiFieldEncoder entryEncoder = rowEncoder.getEntryEncoder();
entryEncoder.reset();
entryEncoder.setRawBytes(srcRowKey);
byte[] indexValue = rowEncoder.encode();
byte[] indexRowKey;
if (index.getUnique()) {
boolean nonUnique =
index.getUniqueWithDuplicateNulls() && (hasNullKeyFields || !keyAccumulator.isFinished());
indexRowKey = getIndexRowKey(srcRowKey, nonUnique);
} else indexRowKey = getIndexRowKey(srcRowKey, true);
return new KVPair(indexRowKey, indexValue, KVPair.Type.INSERT);
}
/**
* Make a ConstraintDescriptor out of a SYSCONSTRAINTS row
*
* @param row a SYSCONSTRAINTS row
* @param parentTupleDescriptor Subconstraint descriptor with auxiliary info.
* @param dd dataDictionary
* @throws StandardException thrown on failure
*/
public TupleDescriptor buildDescriptor(
ExecRow row, TupleDescriptor parentTupleDescriptor, DataDictionary dd)
throws StandardException {
ConstraintDescriptor constraintDesc = null;
if (SanityManager.DEBUG) {
SanityManager.ASSERT(
row.nColumns() == SYSCONSTRAINTS_COLUMN_COUNT,
"Wrong number of columns for a SYSCONSTRAINTS row");
}
DataValueDescriptor col;
ConglomerateDescriptor conglomDesc;
DataDescriptorGenerator ddg;
TableDescriptor td = null;
int constraintIType = -1;
int[] keyColumns = null;
UUID constraintUUID;
UUID schemaUUID;
UUID tableUUID;
UUID referencedConstraintId = null;
SchemaDescriptor schema;
String tableUUIDString;
String constraintName;
String constraintSType;
String constraintStateStr;
boolean constraintEnabled;
int referenceCount;
String constraintUUIDString;
String schemaUUIDString;
SubConstraintDescriptor scd;
if (SanityManager.DEBUG) {
if (!(parentTupleDescriptor instanceof SubConstraintDescriptor)) {
SanityManager.THROWASSERT(
"parentTupleDescriptor expected to be instanceof "
+ "SubConstraintDescriptor, not "
+ parentTupleDescriptor.getClass().getName());
}
}
scd = (SubConstraintDescriptor) parentTupleDescriptor;
ddg = dd.getDataDescriptorGenerator();
/* 1st column is CONSTRAINTID (UUID - char(36)) */
col = row.getColumn(SYSCONSTRAINTS_CONSTRAINTID);
constraintUUIDString = col.getString();
constraintUUID = getUUIDFactory().recreateUUID(constraintUUIDString);
/* 2nd column is TABLEID (UUID - char(36)) */
col = row.getColumn(SYSCONSTRAINTS_TABLEID);
tableUUIDString = col.getString();
tableUUID = getUUIDFactory().recreateUUID(tableUUIDString);
/* Get the TableDescriptor.
* It may be cached in the SCD,
* otherwise we need to go to the
* DD.
*/
if (scd != null) {
td = scd.getTableDescriptor();
}
if (td == null) {
td = dd.getTableDescriptor(tableUUID);
}
/* 3rd column is NAME (varchar(128)) */
col = row.getColumn(SYSCONSTRAINTS_CONSTRAINTNAME);
constraintName = col.getString();
/* 4th column is TYPE (char(1)) */
col = row.getColumn(SYSCONSTRAINTS_TYPE);
constraintSType = col.getString();
if (SanityManager.DEBUG) {
SanityManager.ASSERT(constraintSType.length() == 1, "Fourth column type incorrect");
}
boolean typeSet = false;
switch (constraintSType.charAt(0)) {
case 'P':
constraintIType = DataDictionary.PRIMARYKEY_CONSTRAINT;
typeSet = true;
// fall through
case 'U':
if (!typeSet) {
constraintIType = DataDictionary.UNIQUE_CONSTRAINT;
typeSet = true;
}
// fall through
case 'F':
if (!typeSet) constraintIType = DataDictionary.FOREIGNKEY_CONSTRAINT;
if (SanityManager.DEBUG) {
if (!(parentTupleDescriptor instanceof SubKeyConstraintDescriptor)) {
SanityManager.THROWASSERT(
"parentTupleDescriptor expected to be instanceof "
+ "SubKeyConstraintDescriptor, not "
+ parentTupleDescriptor.getClass().getName());
}
}
conglomDesc =
td.getConglomerateDescriptor(
((SubKeyConstraintDescriptor) parentTupleDescriptor).getIndexId());
/* Take care the rare case of conglomDesc being null. The
* reason is that our "td" is out of date. Another thread
* which was adding a constraint committed between the moment
* we got the table descriptor (conglomerate list) and the
* moment we scanned and got the constraint desc list. Since
* that thread just added a new row to SYSCONGLOMERATES,
* SYSCONSTRAINTS, etc. We wouldn't have wanted to lock the
* system tables just to prevent other threads from adding new
* rows.
*/
if (conglomDesc == null) {
// we can't be getting td from cache because if we are
// here, we must have been in dd's ddl mode (that's why
// the ddl thread went through), we are not done yet, the
// dd ref count is not 0, hence it couldn't have turned
// into COMPILE_ONLY mode
td = dd.getTableDescriptor(tableUUID);
if (scd != null) scd.setTableDescriptor(td);
// try again now
conglomDesc =
td.getConglomerateDescriptor(
((SubKeyConstraintDescriptor) parentTupleDescriptor).getIndexId());
}
if (SanityManager.DEBUG) {
SanityManager.ASSERT(
conglomDesc != null, "conglomDesc is expected to be non-null for backing index");
}
referencedConstraintId =
((SubKeyConstraintDescriptor) parentTupleDescriptor).getKeyConstraintId();
keyColumns = conglomDesc.getIndexDescriptor().baseColumnPositions();
break;
case 'C':
constraintIType = DataDictionary.CHECK_CONSTRAINT;
if (SanityManager.DEBUG) {
if (!(parentTupleDescriptor instanceof SubCheckConstraintDescriptor)) {
SanityManager.THROWASSERT(
"parentTupleDescriptor expected to be instanceof "
+ "SubCheckConstraintDescriptor, not "
+ parentTupleDescriptor.getClass().getName());
}
}
break;
default:
if (SanityManager.DEBUG) {
SanityManager.THROWASSERT("Fourth column value invalid");
}
}
/* 5th column is SCHEMAID (UUID - char(36)) */
col = row.getColumn(SYSCONSTRAINTS_SCHEMAID);
schemaUUIDString = col.getString();
schemaUUID = getUUIDFactory().recreateUUID(schemaUUIDString);
schema = dd.getSchemaDescriptor(schemaUUID, null);
/* 6th column is STATE (char(1)) */
col = row.getColumn(SYSCONSTRAINTS_STATE);
constraintStateStr = col.getString();
if (SanityManager.DEBUG) {
SanityManager.ASSERT(constraintStateStr.length() == 1, "Sixth column (state) type incorrect");
}
switch (constraintStateStr.charAt(0)) {
case 'E':
constraintEnabled = true;
break;
case 'D':
constraintEnabled = false;
break;
default:
constraintEnabled = true;
if (SanityManager.DEBUG) {
SanityManager.THROWASSERT(
"Invalidate state value '" + constraintStateStr + "' for constraint");
}
}
/* 7th column is REFERENCECOUNT, boolean */
col = row.getColumn(SYSCONSTRAINTS_REFERENCECOUNT);
referenceCount = col.getInt();
/* now build and return the descriptor */
switch (constraintIType) {
case DataDictionary.PRIMARYKEY_CONSTRAINT:
constraintDesc =
ddg.newPrimaryKeyConstraintDescriptor(
td,
constraintName,
false, // deferable,
false, // initiallyDeferred,
keyColumns, // genReferencedColumns(dd, td), //int referencedColumns[],
constraintUUID,
((SubKeyConstraintDescriptor) parentTupleDescriptor).getIndexId(),
schema,
constraintEnabled,
referenceCount);
break;
case DataDictionary.UNIQUE_CONSTRAINT:
constraintDesc =
ddg.newUniqueConstraintDescriptor(
td,
constraintName,
false, // deferable,
false, // initiallyDeferred,
keyColumns, // genReferencedColumns(dd, td), //int referencedColumns[],
constraintUUID,
((SubKeyConstraintDescriptor) parentTupleDescriptor).getIndexId(),
schema,
constraintEnabled,
referenceCount);
break;
case DataDictionary.FOREIGNKEY_CONSTRAINT:
if (SanityManager.DEBUG) {
SanityManager.ASSERT(
referenceCount == 0, "REFERENCECOUNT column is nonzero for fk constraint");
}
constraintDesc =
ddg.newForeignKeyConstraintDescriptor(
td,
constraintName,
false, // deferable,
false, // initiallyDeferred,
keyColumns, // genReferencedColumns(dd, td), //int referencedColumns[],
constraintUUID,
((SubKeyConstraintDescriptor) parentTupleDescriptor).getIndexId(),
schema,
referencedConstraintId,
constraintEnabled,
((SubKeyConstraintDescriptor) parentTupleDescriptor).getRaDeleteRule(),
((SubKeyConstraintDescriptor) parentTupleDescriptor).getRaUpdateRule());
break;
case DataDictionary.CHECK_CONSTRAINT:
if (SanityManager.DEBUG) {
SanityManager.ASSERT(
referenceCount == 0, "REFERENCECOUNT column is nonzero for check constraint");
}
constraintDesc =
ddg.newCheckConstraintDescriptor(
td,
constraintName,
false, // deferable,
false, // initiallyDeferred,
constraintUUID,
((SubCheckConstraintDescriptor) parentTupleDescriptor).getConstraintText(),
((SubCheckConstraintDescriptor) parentTupleDescriptor)
.getReferencedColumnsDescriptor(),
schema,
constraintEnabled);
break;
}
return constraintDesc;
}