/*! ****************************************************************************** * * Pentaho Data Integration * * Copyright (C) 2002-2013 by Pentaho : http://www.pentaho.com * ******************************************************************************* * * 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 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.pentaho.di.trans.steps.mapping; import org.pentaho.di.core.Const; import org.pentaho.di.core.exception.KettleException; import org.pentaho.di.core.xml.XMLHandler; import org.pentaho.di.repository.ObjectId; import org.pentaho.di.repository.Repository; import org.pentaho.metastore.api.IMetaStore; import org.w3c.dom.Node; /** * We need out mapping to be parameterized.<br> * This we do with the use of environment variables.<br> * That way we can set one variable to another, etc.<br> * * @author matt * @version 3.0 * @since 2007-06-27 * */ public class MappingParameters implements Cloneable { public static final String XML_TAG = "parameters"; private static final String XML_VARIABLES_TAG = "variablemapping"; /** The name of the variable to set in the sub-transformation */ private String[] variable; /** This is a simple String with optionally variables in them **/ private String[] input; /** This flag causes the sub-transformation to inherit all variables from the parent */ private boolean inheritingAllVariables; public MappingParameters() { super(); variable = new String[] {}; input = new String[] {}; inheritingAllVariables = true; } @Override public Object clone() { try { return super.clone(); } catch ( CloneNotSupportedException e ) { throw new RuntimeException( e ); // Nope, we don't want that in our code. } } public MappingParameters( Node paramNode ) { int nrVariables = XMLHandler.countNodes( paramNode, XML_VARIABLES_TAG ); variable = new String[nrVariables]; input = new String[nrVariables]; for ( int i = 0; i < variable.length; i++ ) { Node variableMappingNode = XMLHandler.getSubNodeByNr( paramNode, XML_VARIABLES_TAG, i ); variable[i] = XMLHandler.getTagValue( variableMappingNode, "variable" ); input[i] = XMLHandler.getTagValue( variableMappingNode, "input" ); } inheritingAllVariables = "Y".equalsIgnoreCase( XMLHandler.getTagValue( paramNode, "inherit_all_vars" ) ); } public String getXML() { StringBuilder xml = new StringBuilder( 200 ); xml.append( " " ).append( XMLHandler.openTag( XML_TAG ) ); for ( int i = 0; i < variable.length; i++ ) { xml.append( " " ).append( XMLHandler.openTag( XML_VARIABLES_TAG ) ); xml.append( XMLHandler.addTagValue( "variable", variable[i], false ) ); xml.append( XMLHandler.addTagValue( "input", input[i], false ) ); xml.append( XMLHandler.closeTag( XML_VARIABLES_TAG ) ).append( Const.CR ); } xml.append( " " ).append( XMLHandler.addTagValue( "inherit_all_vars", inheritingAllVariables ) ); xml.append( " " ).append( XMLHandler.closeTag( XML_TAG ) ); return xml.toString(); } public void saveRep( Repository rep, IMetaStore metaStore, ObjectId id_transformation, ObjectId id_step ) throws KettleException { for ( int i = 0; i < variable.length; i++ ) { rep.saveStepAttribute( id_transformation, id_step, i, "mapping_parameter_variable", variable[i] ); rep.saveStepAttribute( id_transformation, id_step, i, "mapping_parameter_input", input[i] ); } rep.saveStepAttribute( id_transformation, id_step, "mapping_parameter_inherit_all_vars", inheritingAllVariables ); } public MappingParameters( Repository rep, ObjectId id_step ) throws KettleException { int nrVariables = rep.countNrStepAttributes( id_step, "mapping_parameter_variable" ); variable = new String[nrVariables]; input = new String[nrVariables]; for ( int i = 0; i < nrVariables; i++ ) { variable[i] = rep.getStepAttributeString( id_step, i, "mapping_parameter_variable" ); input[i] = rep.getStepAttributeString( id_step, i, "mapping_parameter_input" ); } inheritingAllVariables = rep.getStepAttributeBoolean( id_step, "mapping_parameter_inherit_all_vars" ); } /** * @return the inputField */ public String[] getInputField() { return input; } /** * @param inputField * the inputField to set */ public void setInputField( String[] inputField ) { this.input = inputField; } /** * @return the variable */ public String[] getVariable() { return variable; } /** * @param variable * the variable to set */ public void setVariable( String[] variable ) { this.variable = variable; } /** * @return the inheritingAllVariables */ public boolean isInheritingAllVariables() { return inheritingAllVariables; } /** * @param inheritingAllVariables * the inheritingAllVariables to set */ public void setInheritingAllVariables( boolean inheritingAllVariables ) { this.inheritingAllVariables = inheritingAllVariables; } }