| /* |
| * 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.vxquery.xmlquery.query; |
| |
| import java.io.IOException; |
| |
| import org.apache.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import org.apache.hyracks.algebricks.core.algebra.prettyprint.AlgebricksAppendable; |
| import org.apache.hyracks.algebricks.core.algebra.prettyprint.LogicalOperatorPrettyPrintVisitor; |
| import org.apache.hyracks.algebricks.core.algebra.prettyprint.PlanPrettyPrinter; |
| import org.apache.hyracks.algebricks.core.algebra.visitors.ILogicalExpressionVisitor; |
| import org.apache.hyracks.api.job.JobSpecification; |
| import org.apache.vxquery.compiler.algebricks.prettyprint.VXQueryLogicalExpressionPrettyPrintVisitor; |
| import org.apache.vxquery.xmlquery.ast.ModuleNode; |
| |
| import com.thoughtworks.xstream.XStream; |
| import com.thoughtworks.xstream.io.xml.DomDriver; |
| |
| public class VXQueryCompilationListener implements XQueryCompilationListener { |
| boolean showTET, showRP, showOET, showAST; |
| |
| public VXQueryCompilationListener(boolean showAST, boolean showTET, boolean showOET, boolean showRP) { |
| this.showTET = showTET; |
| this.showRP = showRP; |
| this.showOET = showOET; |
| this.showAST = showAST; |
| } |
| |
| /** |
| * Outputs the query inputs, outputs and user constraints for each module as result of code generation. |
| * |
| * @param module |
| */ |
| public void notifyCodegenResult(Module module) { |
| if (showRP) { |
| JobSpecification jobSpec = module.getHyracksJobSpecification(); |
| try { |
| System.err.println("***Runtime Plan: "); |
| System.err.println(jobSpec.toJSON().toString()); |
| } catch (IOException e) { |
| e.printStackTrace(); |
| System.err.println(jobSpec.toString()); |
| } |
| } |
| } |
| |
| /** |
| * Outputs the syntax translation tree for the module in the format: "-- logical operator(if exists) | execution mode |" |
| * where execution mode can be one of: UNPARTITIONED,PARTITIONED,LOCAL |
| * |
| * @param module |
| */ |
| @Override |
| public void notifyTranslationResult(Module module) { |
| if (showTET) { |
| System.err.println("***Translated Expression Tree: "); |
| System.err.println(appendPrettyPlan(new StringBuilder(), module).toString()); |
| } |
| } |
| |
| @Override |
| public void notifyTypecheckResult(Module module) { |
| } |
| |
| /** |
| * Outputs the optimized expression tree for the module in the format: |
| * "-- logical operator(if exists) | execution mode |" where execution mode can be one of: UNPARTITIONED,PARTITIONED,LOCAL |
| * |
| * @param module |
| */ |
| @Override |
| public void notifyOptimizedResult(Module module) { |
| if (showOET) { |
| System.err.println("***Optimized Expression Tree: "); |
| System.err.println(appendPrettyPlan(new StringBuilder(), module).toString()); |
| } |
| } |
| |
| /** |
| * Outputs the abstract syntax tree obtained from parsing by serializing the DomDriver object to a pretty-printed XML |
| * String. |
| * |
| * @param moduleNode |
| */ |
| @Override |
| public void notifyParseResult(ModuleNode moduleNode) { |
| if (showAST) { |
| System.err.println("***Abstract Syntax Tree: "); |
| System.err.println(new XStream(new DomDriver()).toXML(moduleNode)); |
| } |
| } |
| |
| private StringBuilder appendPrettyPlan(StringBuilder sb, Module module) { |
| try { |
| ILogicalExpressionVisitor<String, Integer> ev = new VXQueryLogicalExpressionPrettyPrintVisitor( |
| module.getModuleContext()); |
| AlgebricksAppendable buffer = new AlgebricksAppendable(); |
| LogicalOperatorPrettyPrintVisitor v = new LogicalOperatorPrettyPrintVisitor(buffer, ev); |
| PlanPrettyPrinter.printPlan(module.getBody(), v, 0); |
| sb.append(buffer.toString()); |
| } catch (AlgebricksException e) { |
| e.printStackTrace(); |
| } |
| return sb; |
| } |
| } |