columnIndexesToBe = new int[allColumns.size() - posOffset];
pkSlotIndexesToBe = new int[columnIndexesToBe.length];
targetColumns = Lists.newArrayListWithExpectedSize(columnIndexesToBe.length);
targetColumns.addAll(Collections.<PColumn>nCopies(columnIndexesToBe.length, null));
for (int i = posOffset, j = posOffset; i < allColumns.size(); i++) {
PColumn column = allColumns.get(i);
columnIndexesToBe[i-posOffset] = i;
targetColumns.set(i-posOffset, column);
if (SchemaUtil.isPKColumn(column)) {
pkSlotIndexesToBe[i-posOffset] = j++;
}
}
} else {
columnIndexesToBe = new int[numColsInUpsert];
pkSlotIndexesToBe = new int[columnIndexesToBe.length];
targetColumns = Lists.newArrayListWithExpectedSize(columnIndexesToBe.length);
targetColumns.addAll(Collections.<PColumn>nCopies(columnIndexesToBe.length, null));
Arrays.fill(columnIndexesToBe, -1); // TODO: necessary? So we'll get an AIOB exception if it's not replaced
Arrays.fill(pkSlotIndexesToBe, -1); // TODO: necessary? So we'll get an AIOB exception if it's not replaced
BitSet pkColumnsSet = new BitSet(table.getPKColumns().size());
for (int i =0; i < numColsInUpsert; i++) {
ColumnName colName = columnNodes.get(i);
ColumnRef ref = resolver.resolveColumn(null, colName.getFamilyName(), colName.getColumnName());
columnIndexesToBe[i] = ref.getColumnPosition();
targetColumns.set(i, ref.getColumn());
if (SchemaUtil.isPKColumn(ref.getColumn())) {
pkColumnsSet.set(pkSlotIndexesToBe[i] = ref.getPKSlotPosition());
}
}
int i = posOffset;
for ( ; i < table.getPKColumns().size(); i++) {
PColumn pkCol = table.getPKColumns().get(i);
if (!pkColumnsSet.get(i)) {
if (!pkCol.isNullable()) {
throw new ConstraintViolationException(table.getName().getString() + "." + pkCol.getName().getString() + " may not be null");
}
}
}
}
List<ParseNode> valueNodes = upsert.getValues();
QueryPlan plan = null;
RowProjector rowProjectorToBe = null;
int nValuesToSet;
boolean runOnServer = false;
UpsertingParallelIteratorFactory upsertParallelIteratorFactoryToBe = null;
final boolean isAutoCommit = connection.getAutoCommit();
if (valueNodes == null) {
SelectStatement select = upsert.getSelect();
assert(select != null);
TableRef selectTableRef = FromCompiler.getResolver(select, connection).getTables().get(0);
boolean sameTable = tableRef.equals(selectTableRef);
/* We can run the upsert in a coprocessor if:
* 1) the into table matches from table
* 2) the select query isn't doing aggregation
* 3) autoCommit is on
* 4) the table is not immutable, as the client is the one that figures out the additional
* puts for index tables.
* 5) no limit clause
* Otherwise, run the query to pull the data from the server
* and populate the MutationState (upto a limit).
*/
runOnServer = sameTable && isAutoCommit && !table.isImmutableRows() && !select.isAggregate() && !select.isDistinct() && select.getLimit() == null && table.getBucketNum() == null;
ParallelIteratorFactory parallelIteratorFactory;
// TODO: once MutationState is thread safe, then when auto commit is off, we can still run in parallel
if (select.isAggregate() || select.isDistinct() || select.getLimit() != null) {
parallelIteratorFactory = null;
} else {
// We can pipeline the upsert select instead of spooling everything to disk first,
// if we don't have any post processing that's required.
parallelIteratorFactory = upsertParallelIteratorFactoryToBe = new UpsertingParallelIteratorFactory(connection, tableRef);
}
// If we may be able to run on the server, add a hint that favors using the data table
// if all else is equal.
// TODO: it'd be nice if we could figure out in advance if the PK is potentially changing,
// as this would disallow running on the server. We currently use the row projector we
// get back to figure this out.
HintNode hint = upsert.getHint();
if (!upsert.getHint().hasHint(Hint.USE_INDEX_OVER_DATA_TABLE)) {
hint = HintNode.create(hint, Hint.USE_DATA_OVER_INDEX_TABLE);
}
select = SelectStatement.create(select, hint);
// Pass scan through if same table in upsert and select so that projection is computed correctly
// Use optimizer to choose the best plan
plan = new QueryOptimizer(services).optimize(select, statement, targetColumns, parallelIteratorFactory);
runOnServer &= plan.getTableRef().equals(tableRef);
rowProjectorToBe = plan.getProjector();
nValuesToSet = rowProjectorToBe.getColumnCount();
// Cannot auto commit if doing aggregation or topN or salted
// Salted causes problems because the row may end up living on a different region
} else {
nValuesToSet = valueNodes.size();
}
final RowProjector projector = rowProjectorToBe;
final UpsertingParallelIteratorFactory upsertParallelIteratorFactory = upsertParallelIteratorFactoryToBe;
final QueryPlan queryPlan = plan;
// Resize down to allow a subset of columns to be specifiable
if (columnNodes.isEmpty()) {
columnIndexesToBe = Arrays.copyOf(columnIndexesToBe, nValuesToSet);
pkSlotIndexesToBe = Arrays.copyOf(pkSlotIndexesToBe, nValuesToSet);
}
if (nValuesToSet != columnIndexesToBe.length) {
throw new SQLExceptionInfo.Builder(SQLExceptionCode.UPSERT_COLUMN_NUMBERS_MISMATCH)
.setMessage("Numbers of columns: " + columnIndexesToBe.length + ". Number of values: " + nValuesToSet)
.build().buildException();
}
final int[] columnIndexes = columnIndexesToBe;
final int[] pkSlotIndexes = pkSlotIndexesToBe;
// TODO: break this up into multiple functions
////////////////////////////////////////////////////////////////////
// UPSERT SELECT
/////////////////////////////////////////////////////////////////////
if (valueNodes == null) {
////////////////////////////////////////////////////////////////////
// UPSERT SELECT run server-side (maybe)
/////////////////////////////////////////////////////////////////////
if (runOnServer) {
// At most this array will grow bigger by the number of PK columns
int[] allColumnsIndexes = Arrays.copyOf(columnIndexes, columnIndexes.length + nValuesToSet);
int[] reverseColumnIndexes = new int[table.getColumns().size()];
List<Expression> projectedExpressions = Lists.newArrayListWithExpectedSize(reverseColumnIndexes.length);
Arrays.fill(reverseColumnIndexes, -1);
for (int i =0; i < nValuesToSet; i++) {
projectedExpressions.add(projector.getColumnProjector(i).getExpression());
reverseColumnIndexes[columnIndexes[i]] = i;
}
/*
* Order projected columns and projected expressions with PK columns
* leading order by slot position
*/
int offset = table.getBucketNum() == null ? 0 : 1;
for (int i = 0; i < table.getPKColumns().size() - offset; i++) {
PColumn column = table.getPKColumns().get(i + offset);
int pos = reverseColumnIndexes[column.getPosition()];
if (pos == -1) {
// Last PK column may be fixed width and nullable
// We don't want to insert a null expression b/c
// it's not valid to set a fixed width type to null.
if (column.getDataType().isFixedWidth()) {
continue;
}
// Add literal null for missing PK columns
pos = projectedExpressions.size();
Expression literalNull = LiteralExpression.newConstant(null, column.getDataType());
projectedExpressions.add(literalNull);
allColumnsIndexes[pos] = column.getPosition();
}
// Swap select expression at pos with i
Collections.swap(projectedExpressions, i, pos);
// Swap column indexes and reverse column indexes too
int tempPos = allColumnsIndexes[i];
allColumnsIndexes[i] = allColumnsIndexes[pos];
allColumnsIndexes[pos] = tempPos;
reverseColumnIndexes[tempPos] = reverseColumnIndexes[i];
reverseColumnIndexes[i] = i;
}
// If any pk slots are changing, be conservative and don't run this server side.
// If the row ends up living in a different region, we'll get an error otherwise.
for (int i = 0; i < table.getPKColumns().size(); i++) {
PColumn column = table.getPKColumns().get(i);
Expression source = projectedExpressions.get(i);
if (source == null || !source.equals(new ColumnRef(tableRef, column.getPosition()).newColumnExpression())) {
// TODO: we could check the region boundaries to see if the pk will still be in it.
runOnServer = false; // bail on running server side, since PK may be changing
break;
}
}
////////////////////////////////////////////////////////////////////
// UPSERT SELECT run server-side
/////////////////////////////////////////////////////////////////////
if (runOnServer) {
// Iterate through columns being projected
List<PColumn> projectedColumns = Lists.newArrayListWithExpectedSize(projectedExpressions.size());
for (int i = 0; i < projectedExpressions.size(); i++) {
// Must make new column if position has changed
PColumn column = allColumns.get(allColumnsIndexes[i]);
projectedColumns.add(column.getPosition() == i ? column : new PColumnImpl(column, i));
}
// Build table from projectedColumns
PTable projectedTable = PTableImpl.makePTable(table, projectedColumns);
SelectStatement select = SelectStatement.create(SelectStatement.COUNT_ONE, upsert.getHint());
final RowProjector aggProjector = ProjectionCompiler.compile(queryPlan.getContext(), select, GroupBy.EMPTY_GROUP_BY);
/*
* Transfer over PTable representing subset of columns selected, but all PK columns.
* Move columns setting PK first in pkSlot order, adding LiteralExpression of null for any missing ones.
* Transfer over List<Expression> for projection.
* In region scan, evaluate expressions in order, collecting first n columns for PK and collection non PK in mutation Map
* Create the PRow and get the mutations, adding them to the batch
*/
final StatementContext context = queryPlan.getContext();
final Scan scan = context.getScan();
scan.setAttribute(UngroupedAggregateRegionObserver.UPSERT_SELECT_TABLE, UngroupedAggregateRegionObserver.serialize(projectedTable));
scan.setAttribute(UngroupedAggregateRegionObserver.UPSERT_SELECT_EXPRS, UngroupedAggregateRegionObserver.serialize(projectedExpressions));
// Ignore order by - it has no impact
final QueryPlan aggPlan = new AggregatePlan(context, select, tableRef, aggProjector, null, OrderBy.EMPTY_ORDER_BY, null, GroupBy.EMPTY_GROUP_BY, null);
return new MutationPlan() {
@Override
public PhoenixConnection getConnection() {
return connection;
}
@Override
public ParameterMetaData getParameterMetaData() {
return queryPlan.getContext().getBindManager().getParameterMetaData();
}
@Override
public MutationState execute() throws SQLException {
ImmutableBytesWritable ptr = context.getTempPtr();
tableRef.getTable().getIndexMaintainers(ptr);
ServerCache cache = null;
try {
if (ptr.getLength() > 0) {
IndexMetaDataCacheClient client = new IndexMetaDataCacheClient(connection, tableRef);
cache = client.addIndexMetadataCache(context.getScanRanges(), ptr);
byte[] uuidValue = cache.getId();
scan.setAttribute(PhoenixIndexCodec.INDEX_UUID, uuidValue);
}
Scanner scanner = aggPlan.getScanner();
ResultIterator iterator = scanner.iterator();
try {
Tuple row = iterator.next();
final long mutationCount = (Long)aggProjector.getColumnProjector(0).getValue(row, PDataType.LONG, ptr);
return new MutationState(maxSize, connection) {
@Override
public long getUpdateCount() {
return mutationCount;
}
};
} finally {
iterator.close();
}
} finally {
if (cache != null) {
cache.close();
}
}
}
@Override
public ExplainPlan getExplainPlan() throws SQLException {
List<String> queryPlanSteps = aggPlan.getExplainPlan().getPlanSteps();
List<String> planSteps = Lists.newArrayListWithExpectedSize(queryPlanSteps.size()+1);
planSteps.add("UPSERT ROWS");
planSteps.addAll(queryPlanSteps);
return new ExplainPlan(planSteps);
}
};
}
}
////////////////////////////////////////////////////////////////////
// UPSERT SELECT run client-side
/////////////////////////////////////////////////////////////////////
return new MutationPlan() {
@Override
public PhoenixConnection getConnection() {
return connection;
}
@Override
public ParameterMetaData getParameterMetaData() {
return queryPlan.getContext().getBindManager().getParameterMetaData();
}
@Override
public MutationState execute() throws SQLException {
Scanner scanner = queryPlan.getScanner();
ResultIterator iterator = scanner.iterator();
if (upsertParallelIteratorFactory == null) {
return upsertSelect(statement, tableRef, projector, iterator, columnIndexes, pkSlotIndexes);
}
upsertParallelIteratorFactory.setRowProjector(projector);
upsertParallelIteratorFactory.setColumnIndexes(columnIndexes);
upsertParallelIteratorFactory.setPkSlotIndexes(pkSlotIndexes);
Tuple tuple;
long totalRowCount = 0;
while ((tuple=iterator.next()) != null) {// Runs query
KeyValue kv = tuple.getValue(0);
totalRowCount += PDataType.LONG.getCodec().decodeLong(kv.getBuffer(), kv.getValueOffset(), null);
}
// Return total number of rows that have been updated. In the case of auto commit being off
// the mutations will all be in the mutation state of the current connection.
return new MutationState(maxSize, statement.getConnection(), totalRowCount);
}
@Override
public ExplainPlan getExplainPlan() throws SQLException {
List<String> queryPlanSteps = queryPlan.getExplainPlan().getPlanSteps();
List<String> planSteps = Lists.newArrayListWithExpectedSize(queryPlanSteps.size()+1);
planSteps.add("UPSERT SELECT");
planSteps.addAll(queryPlanSteps);
return new ExplainPlan(planSteps);
}
};
}
////////////////////////////////////////////////////////////////////
// UPSERT VALUES
/////////////////////////////////////////////////////////////////////
if (nValuesToSet > numColsInTable) {
throw new SQLExceptionInfo.Builder(SQLExceptionCode.UPSERT_COLUMN_NUMBERS_MISMATCH)
.setMessage("Numbers of columns in table: " + numColsInTable + ". Number of values: " + nValuesToSet)
.build().buildException();
}
int nodeIndex = 0;
// Allocate array based on size of all columns in table,
// since some values may not be set (if they're nullable).
final StatementContext context = new StatementContext(upsert, connection, resolver, statement.getParameters(), new Scan());
UpsertValuesCompiler expressionBuilder = new UpsertValuesCompiler(context);
final byte[][] values = new byte[nValuesToSet][];
for (ParseNode valueNode : valueNodes) {
if (!valueNode.isConstant()) {
throw new SQLExceptionInfo.Builder(SQLExceptionCode.VALUE_IN_UPSERT_NOT_CONSTANT).build().buildException();
}
PColumn column = allColumns.get(columnIndexes[nodeIndex]);
expressionBuilder.setColumn(column);
LiteralExpression literalExpression = (LiteralExpression)valueNode.accept(expressionBuilder);
byte[] byteValue = literalExpression.getBytes();
if (literalExpression.getDataType() != null) {
// If ColumnModifier from expression in SELECT doesn't match the
// column being projected into then invert the bits.
if (literalExpression.getColumnModifier() != column.getColumnModifier()) {
byte[] tempByteValue = Arrays.copyOf(byteValue, byteValue.length);
byteValue = ColumnModifier.SORT_DESC.apply(byteValue, 0, tempByteValue, 0, byteValue.length);
}
if (!literalExpression.getDataType().isCoercibleTo(column.getDataType(), literalExpression.getValue())) {
throw new TypeMismatchException(
literalExpression.getDataType(), column.getDataType(), "expression: "
+ literalExpression.toString() + " in column " + column);
}
if (!column.getDataType().isSizeCompatible(literalExpression.getDataType(),
literalExpression.getValue(), byteValue, literalExpression.getMaxLength(),
column.getMaxLength(), literalExpression.getScale(), column.getScale())) {
throw new SQLExceptionInfo.Builder(
SQLExceptionCode.DATA_INCOMPATIBLE_WITH_TYPE).setColumnName(column.getName().getString())
.setMessage("value=" + literalExpression.toString()).build().buildException();
}
}
byteValue = column.getDataType().coerceBytes(byteValue, literalExpression.getValue(),
literalExpression.getDataType(), literalExpression.getMaxLength(), literalExpression.getScale(),
column.getMaxLength(), column.getScale());
values[nodeIndex] = byteValue;
nodeIndex++;
}
return new MutationPlan() {