com.hazelcast.jet.sql.impl.opt.logical.FunctionLogicalRules Maven / Gradle / Ivy
/*
* Copyright 2024 Hazelcast Inc.
*
* Licensed under the Hazelcast Community License (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://hazelcast.com/hazelcast-community-license
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.hazelcast.jet.sql.impl.opt.logical;
import com.hazelcast.jet.impl.util.Util;
import com.hazelcast.jet.sql.impl.aggregate.function.HazelcastWindowTableFunction;
import com.hazelcast.jet.sql.impl.opt.OptUtils;
import com.hazelcast.jet.sql.impl.schema.HazelcastDynamicTableFunction;
import com.hazelcast.jet.sql.impl.schema.HazelcastSpecificTableFunction;
import com.hazelcast.jet.sql.impl.schema.HazelcastTable;
import com.hazelcast.sql.impl.expression.Expression;
import com.hazelcast.sql.impl.plan.node.PlanNodeFieldTypeProvider;
import com.hazelcast.shaded.org.apache.calcite.plan.Convention;
import com.hazelcast.shaded.org.apache.calcite.plan.HazelcastRelOptCluster;
import com.hazelcast.shaded.org.apache.calcite.plan.RelOptRule;
import com.hazelcast.shaded.org.apache.calcite.rel.RelNode;
import com.hazelcast.shaded.org.apache.calcite.rel.convert.ConverterRule;
import com.hazelcast.shaded.org.apache.calcite.rel.logical.LogicalTableFunctionScan;
import com.hazelcast.shaded.org.apache.calcite.rex.RexCall;
import com.hazelcast.shaded.org.apache.calcite.rex.RexNode;
import com.hazelcast.shaded.org.apache.calcite.rex.RexVisitor;
import java.util.List;
import java.util.stream.IntStream;
import static java.util.stream.Collectors.toList;
final class FunctionLogicalRules {
static final RelOptRule SPECIFIC_FUNCTION_INSTANCE = new ConverterRule(
LogicalTableFunctionScan.class, scan -> extractSpecificFunction(scan) != null,
Convention.NONE, Convention.NONE,
FunctionLogicalRules.class.getSimpleName() + "(Specific)"
) {
@Override
public RelNode convert(RelNode rel) {
LogicalTableFunctionScan scan = (LogicalTableFunctionScan) rel;
return OptUtils.createLogicalScan(scan.getCluster(), extractTable(scan));
}
private HazelcastTable extractTable(LogicalTableFunctionScan scan) {
HazelcastSpecificTableFunction specificFunction = extractSpecificFunction(scan);
List operands = ((RexCall) scan.getCall()).getOperands();
RexVisitor> visitor = OptUtils.createRexToExpressionVisitor(
PlanNodeFieldTypeProvider.FAILING_FIELD_TYPE_PROVIDER,
((HazelcastRelOptCluster) scan.getCluster()).getParameterMetadata()
);
List> argumentExpressions = IntStream.range(0, specificFunction.getOperandCountRange().getMax())
.mapToObj(index -> index < operands.size()
? (Expression>) operands.get(index).accept(visitor)
: null
).collect(toList());
return specificFunction.toTable(argumentExpressions);
}
};
static final RelOptRule DYNAMIC_FUNCTION_INSTANCE = new ConverterRule(
LogicalTableFunctionScan.class, scan -> extractDynamicFunction(scan) != null,
Convention.NONE, Convention.NONE,
FunctionLogicalRules.class.getSimpleName() + "(Dynamic)"
) {
@Override
public RelNode convert(RelNode rel) {
LogicalTableFunctionScan scan = (LogicalTableFunctionScan) rel;
return OptUtils.createLogicalScan(scan.getCluster(), extractTable(scan));
}
private HazelcastTable extractTable(LogicalTableFunctionScan scan) {
HazelcastDynamicTableFunction dynamicFunction = extractDynamicFunction(scan);
return dynamicFunction.toTable(scan.getRowType());
}
};
static final RelOptRule WINDOW_FUNCTION_INSTANCE = new ConverterRule(
LogicalTableFunctionScan.class, scan -> extractWindowFunction(scan) != null,
Convention.NONE, Convention.NONE,
FunctionLogicalRules.class.getSimpleName() + "(Window)"
) {
@Override
public RelNode convert(RelNode rel) {
LogicalTableFunctionScan scan = (LogicalTableFunctionScan) rel;
return new SlidingWindowLogicalRel(
scan.getCluster(),
OptUtils.toLogicalConvention(scan.getTraitSet()),
Util.toList(scan.getInputs(), OptUtils::toLogicalInput),
scan.getCall(),
scan.getElementType(),
scan.getRowType(),
scan.getColumnMappings()
);
}
};
private FunctionLogicalRules() {
}
private static HazelcastSpecificTableFunction extractSpecificFunction(LogicalTableFunctionScan scan) {
if (scan == null || !(scan.getCall() instanceof RexCall)) {
return null;
}
RexCall call = (RexCall) scan.getCall();
if (!(call.getOperator() instanceof HazelcastSpecificTableFunction)) {
return null;
}
return (HazelcastSpecificTableFunction) call.getOperator();
}
private static HazelcastDynamicTableFunction extractDynamicFunction(LogicalTableFunctionScan scan) {
if (scan == null || !(scan.getCall() instanceof RexCall)) {
return null;
}
RexCall call = (RexCall) scan.getCall();
if (!(call.getOperator() instanceof HazelcastDynamicTableFunction)) {
return null;
}
return (HazelcastDynamicTableFunction) call.getOperator();
}
private static HazelcastWindowTableFunction extractWindowFunction(LogicalTableFunctionScan scan) {
if (scan == null || !(scan.getCall() instanceof RexCall)) {
return null;
}
RexCall call = (RexCall) scan.getCall();
if (!(call.getOperator() instanceof HazelcastWindowTableFunction)) {
return null;
}
return (HazelcastWindowTableFunction) call.getOperator();
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy