| /* |
| * Copyright 2009-2013 by The Regents of the University of California |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * you may obtain a copy of the License from |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package edu.uci.ics.hyracks.algebricks.core.algebra.expressions; |
| |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.base.ILogicalExpression; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.operators.logical.IOperatorSchema; |
| import edu.uci.ics.hyracks.algebricks.core.jobgen.impl.JobGenContext; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IAggregateEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IAggregateEvaluatorFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyAggregateFunction; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyAggregateFunctionFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyRunningAggregateFunction; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyRunningAggregateFunctionFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopySerializableAggregateFunctionFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyUnnestingFunction; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyUnnestingFunctionFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IRunningAggregateEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IRunningAggregateEvaluatorFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IUnnestingEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.IUnnestingEvaluatorFactory; |
| import edu.uci.ics.hyracks.api.context.IHyracksTaskContext; |
| import edu.uci.ics.hyracks.data.std.api.IPointable; |
| import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage; |
| import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference; |
| |
| public class LogicalExpressionJobGenToExpressionRuntimeProviderAdapter implements IExpressionRuntimeProvider { |
| private final ILogicalExpressionJobGen lejg; |
| |
| public LogicalExpressionJobGenToExpressionRuntimeProviderAdapter(ILogicalExpressionJobGen lejg) { |
| this.lejg = lejg; |
| } |
| |
| @Override |
| public IScalarEvaluatorFactory createEvaluatorFactory(ILogicalExpression expr, IVariableTypeEnvironment env, |
| IOperatorSchema[] inputSchemas, JobGenContext context) throws AlgebricksException { |
| ICopyEvaluatorFactory cef = lejg.createEvaluatorFactory(expr, env, inputSchemas, context); |
| return new ScalarEvaluatorFactoryAdapter(cef); |
| } |
| |
| @Override |
| public IAggregateEvaluatorFactory createAggregateFunctionFactory(AggregateFunctionCallExpression expr, |
| IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context) |
| throws AlgebricksException { |
| ICopyAggregateFunctionFactory caff = lejg.createAggregateFunctionFactory(expr, env, inputSchemas, context); |
| return new AggregateFunctionFactoryAdapter(caff); |
| } |
| |
| @Override |
| public ICopySerializableAggregateFunctionFactory createSerializableAggregateFunctionFactory( |
| AggregateFunctionCallExpression expr, IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, |
| JobGenContext context) throws AlgebricksException { |
| return lejg.createSerializableAggregateFunctionFactory(expr, env, inputSchemas, context); |
| } |
| |
| @Override |
| public IRunningAggregateEvaluatorFactory createRunningAggregateFunctionFactory(StatefulFunctionCallExpression expr, |
| IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context) |
| throws AlgebricksException { |
| ICopyRunningAggregateFunctionFactory craff = lejg.createRunningAggregateFunctionFactory(expr, env, |
| inputSchemas, context); |
| return new RunningAggregateFunctionFactoryAdapter(craff); |
| } |
| |
| @Override |
| public IUnnestingEvaluatorFactory createUnnestingFunctionFactory(UnnestingFunctionCallExpression expr, |
| IVariableTypeEnvironment env, IOperatorSchema[] inputSchemas, JobGenContext context) |
| throws AlgebricksException { |
| ICopyUnnestingFunctionFactory cuff = lejg.createUnnestingFunctionFactory(expr, env, inputSchemas, context); |
| return new UnnestingFunctionFactoryAdapter(cuff); |
| } |
| |
| public static final class ScalarEvaluatorFactoryAdapter implements IScalarEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| private final ICopyEvaluatorFactory cef; |
| |
| public ScalarEvaluatorFactoryAdapter(ICopyEvaluatorFactory cef) { |
| this.cef = cef; |
| } |
| |
| @Override |
| public IScalarEvaluator createScalarEvaluator(IHyracksTaskContext ctx) throws AlgebricksException { |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final ICopyEvaluator ce = cef.createEvaluator(abvs); |
| return new IScalarEvaluator() { |
| @Override |
| public void evaluate(IFrameTupleReference tuple, IPointable result) throws AlgebricksException { |
| abvs.reset(); |
| ce.evaluate(tuple); |
| result.set(abvs); |
| } |
| }; |
| } |
| } |
| |
| public static final class AggregateFunctionFactoryAdapter implements IAggregateEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| private final ICopyAggregateFunctionFactory caff; |
| |
| public AggregateFunctionFactoryAdapter(ICopyAggregateFunctionFactory caff) { |
| this.caff = caff; |
| } |
| |
| @Override |
| public IAggregateEvaluator createAggregateEvaluator(IHyracksTaskContext ctx) throws AlgebricksException { |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final ICopyAggregateFunction caf = caff.createAggregateFunction(abvs); |
| return new IAggregateEvaluator() { |
| @Override |
| public void step(IFrameTupleReference tuple) throws AlgebricksException { |
| caf.step(tuple); |
| } |
| |
| @Override |
| public void init() throws AlgebricksException { |
| abvs.reset(); |
| caf.init(); |
| } |
| |
| @Override |
| public void finish(IPointable result) throws AlgebricksException { |
| caf.finish(); |
| result.set(abvs); |
| } |
| }; |
| } |
| } |
| |
| public static final class RunningAggregateFunctionFactoryAdapter implements IRunningAggregateEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| private final ICopyRunningAggregateFunctionFactory craff; |
| |
| public RunningAggregateFunctionFactoryAdapter(ICopyRunningAggregateFunctionFactory craff) { |
| this.craff = craff; |
| } |
| |
| @Override |
| public IRunningAggregateEvaluator createRunningAggregateEvaluator() throws AlgebricksException { |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final ICopyRunningAggregateFunction craf = craff.createRunningAggregateFunction(abvs); |
| return new IRunningAggregateEvaluator() { |
| @Override |
| public void step(IFrameTupleReference tuple, IPointable result) throws AlgebricksException { |
| abvs.reset(); |
| craf.step(tuple); |
| result.set(abvs); |
| } |
| |
| @Override |
| public void init() throws AlgebricksException { |
| craf.init(); |
| } |
| }; |
| } |
| } |
| |
| public static final class UnnestingFunctionFactoryAdapter implements IUnnestingEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| private final ICopyUnnestingFunctionFactory cuff; |
| |
| public UnnestingFunctionFactoryAdapter(ICopyUnnestingFunctionFactory cuff) { |
| this.cuff = cuff; |
| } |
| |
| @Override |
| public IUnnestingEvaluator createUnnestingEvaluator(IHyracksTaskContext ctx) throws AlgebricksException { |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final ICopyUnnestingFunction cuf = cuff.createUnnestingFunction(abvs); |
| return new IUnnestingEvaluator() { |
| @Override |
| public boolean step(IPointable result) throws AlgebricksException { |
| abvs.reset(); |
| if (cuf.step()) { |
| result.set(abvs); |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public void init(IFrameTupleReference tuple) throws AlgebricksException { |
| cuf.init(tuple); |
| } |
| }; |
| } |
| } |
| } |