| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 at |
| * |
| * 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 org.apache.asterix.optimizer.base; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.asterix.common.exceptions.CompilationException; |
| import org.apache.asterix.common.exceptions.ErrorCode; |
| import org.apache.asterix.common.metadata.DataverseName; |
| import org.apache.asterix.metadata.declared.DataSourceId; |
| import org.apache.asterix.om.functions.BuiltinFunctions; |
| import org.apache.asterix.optimizer.rules.am.AccessMethodUtils; |
| import org.apache.commons.lang3.mutable.Mutable; |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.common.utils.Pair; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalExpression; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.base.ILogicalPlan; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalExpressionTag; |
| import org.apache.hyracks.algebricks.core.algebra.base.LogicalOperatorTag; |
| import org.apache.hyracks.algebricks.core.algebra.expressions.AbstractFunctionCallExpression; |
| import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractDataSourceOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.AbstractLogicalOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.OrderOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.UnnestMapOperator; |
| import org.apache.hyracks.algebricks.core.algebra.operators.logical.WindowOperator; |
| |
| public class AnalysisUtil { |
| /* |
| * If the first child of op is of type opType, then it returns that child, |
| * o/w returns null. |
| */ |
| public final static ILogicalOperator firstChildOfType(AbstractLogicalOperator op, LogicalOperatorTag opType) { |
| List<Mutable<ILogicalOperator>> ins = op.getInputs(); |
| if (ins == null || ins.isEmpty()) { |
| return null; |
| } |
| Mutable<ILogicalOperator> opRef2 = ins.get(0); |
| AbstractLogicalOperator op2 = (AbstractLogicalOperator) opRef2.getValue(); |
| if (op2.getOperatorTag() == opType) { |
| return op2; |
| } else { |
| return null; |
| } |
| } |
| |
| public static int numberOfVarsInExpr(ILogicalExpression e) { |
| switch (e.getExpressionTag()) { |
| case CONSTANT: { |
| return 0; |
| } |
| case FUNCTION_CALL: { |
| AbstractFunctionCallExpression f = (AbstractFunctionCallExpression) e; |
| int s = 0; |
| for (Mutable<ILogicalExpression> arg : f.getArguments()) { |
| s += numberOfVarsInExpr(arg.getValue()); |
| } |
| return s; |
| } |
| case VARIABLE: { |
| return 1; |
| } |
| default: { |
| assert false; |
| throw new IllegalArgumentException(); |
| } |
| } |
| } |
| |
| public static boolean isRunnableFieldAccessFunction(FunctionIdentifier fid) { |
| return fieldAccessFunctions.contains(fid); |
| } |
| |
| public static boolean isRunnableAccessToFieldRecord(ILogicalExpression expr) { |
| if (expr.getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) { |
| AbstractFunctionCallExpression fc = (AbstractFunctionCallExpression) expr; |
| FunctionIdentifier fid = fc.getFunctionIdentifier(); |
| if (AnalysisUtil.isRunnableFieldAccessFunction(fid)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static boolean isAccessByNameToFieldRecord(ILogicalExpression expr) { |
| if (expr.getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) { |
| AbstractFunctionCallExpression fc = (AbstractFunctionCallExpression) expr; |
| FunctionIdentifier fid = fc.getFunctionIdentifier(); |
| if (fid.equals(BuiltinFunctions.FIELD_ACCESS_BY_NAME)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static boolean isAccessToFieldRecord(ILogicalExpression expr) { |
| if (expr.getExpressionTag() == LogicalExpressionTag.FUNCTION_CALL) { |
| AbstractFunctionCallExpression fc = (AbstractFunctionCallExpression) expr; |
| FunctionIdentifier fid = fc.getFunctionIdentifier(); |
| if (fid.equals(BuiltinFunctions.FIELD_ACCESS_BY_INDEX) || fid.equals(BuiltinFunctions.FIELD_ACCESS_BY_NAME) |
| || fid.equals(BuiltinFunctions.FIELD_ACCESS_NESTED)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| public static Pair<DataverseName, String> getDatasetInfo(AbstractDataSourceOperator op) { |
| DataSourceId srcId = (DataSourceId) op.getDataSource().getId(); |
| return new Pair<>(srcId.getDataverseName(), srcId.getDatasourceName()); |
| } |
| |
| public static Pair<DataverseName, String> getExternalDatasetInfo(UnnestMapOperator op) throws AlgebricksException { |
| AbstractFunctionCallExpression unnestExpr = (AbstractFunctionCallExpression) op.getExpressionRef().getValue(); |
| DataverseName dataverseName = DataverseName |
| .createFromCanonicalForm(AccessMethodUtils.getStringConstant(unnestExpr.getArguments().get(0))); |
| String datasetName = AccessMethodUtils.getStringConstant(unnestExpr.getArguments().get(1)); |
| return new Pair<>(dataverseName, datasetName); |
| } |
| |
| /** |
| * Checks whether a window operator has a function call where the function has given property |
| */ |
| public static boolean hasFunctionWithProperty(WindowOperator winOp, |
| BuiltinFunctions.WindowFunctionProperty property) throws CompilationException { |
| for (Mutable<ILogicalExpression> exprRef : winOp.getExpressions()) { |
| ILogicalExpression expr = exprRef.getValue(); |
| if (expr.getExpressionTag() != LogicalExpressionTag.FUNCTION_CALL) { |
| throw new CompilationException(ErrorCode.COMPILATION_ILLEGAL_STATE, winOp.getSourceLocation(), |
| expr.getExpressionTag()); |
| } |
| AbstractFunctionCallExpression callExpr = (AbstractFunctionCallExpression) expr; |
| if (BuiltinFunctions.builtinFunctionHasProperty(callExpr.getFunctionIdentifier(), property)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Checks whether frame boundary expression is a monotonically non-descreasing function over a frame value variable |
| */ |
| public static boolean isWindowFrameBoundaryMonotonic(List<Mutable<ILogicalExpression>> frameBoundaryExprList, |
| List<Pair<OrderOperator.IOrder, Mutable<ILogicalExpression>>> frameValueExprList) { |
| if (frameValueExprList.size() != 1) { |
| return false; |
| } |
| ILogicalExpression frameValueExpr = frameValueExprList.get(0).second.getValue(); |
| if (frameValueExpr.getExpressionTag() != LogicalExpressionTag.VARIABLE) { |
| return false; |
| } |
| if (frameBoundaryExprList.size() != 1) { |
| return false; |
| } |
| ILogicalExpression frameStartExpr = frameBoundaryExprList.get(0).getValue(); |
| switch (frameStartExpr.getExpressionTag()) { |
| case CONSTANT: |
| return true; |
| case VARIABLE: |
| return frameStartExpr.equals(frameValueExpr); |
| case FUNCTION_CALL: |
| AbstractFunctionCallExpression frameStartCallExpr = (AbstractFunctionCallExpression) frameStartExpr; |
| FunctionIdentifier fi = frameStartCallExpr.getFunctionIdentifier(); |
| return (BuiltinFunctions.NUMERIC_ADD.equals(fi) || BuiltinFunctions.NUMERIC_SUBTRACT.equals(fi)) |
| && frameStartCallExpr.getArguments().get(0).getValue().equals(frameValueExpr) |
| && frameStartCallExpr.getArguments().get(1).getValue() |
| .getExpressionTag() == LogicalExpressionTag.CONSTANT; |
| default: |
| throw new IllegalStateException(String.valueOf(frameStartExpr.getExpressionTag())); |
| } |
| } |
| |
| public static boolean isTrivialAggregateSubplan(ILogicalPlan subplan) { |
| if (subplan.getRoots().isEmpty()) { |
| return false; |
| } |
| for (Mutable<ILogicalOperator> rootOpRef : subplan.getRoots()) { |
| ILogicalOperator rootOp = rootOpRef.getValue(); |
| if (rootOp.getOperatorTag() != LogicalOperatorTag.AGGREGATE) { |
| return false; |
| } |
| if (firstChildOfType((AbstractLogicalOperator) rootOp, LogicalOperatorTag.NESTEDTUPLESOURCE) == null) { |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| private static List<FunctionIdentifier> fieldAccessFunctions = new ArrayList<>(); |
| |
| static { |
| fieldAccessFunctions.add(BuiltinFunctions.GET_DATA); |
| fieldAccessFunctions.add(BuiltinFunctions.GET_HANDLE); |
| fieldAccessFunctions.add(BuiltinFunctions.TYPE_OF); |
| } |
| } |