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Container pom for Pentaho Data Integration modules
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/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2017 by Hitachi Vantara : 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.fieldschangesequence;
import java.util.List;
import org.pentaho.di.core.CheckResult;
import org.pentaho.di.core.CheckResultInterface;
import org.pentaho.di.core.Const;
import org.pentaho.di.core.util.Utils;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.exception.KettleXMLException;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMetaInterface;
import org.pentaho.di.core.row.value.ValueMetaInteger;
import org.pentaho.di.core.variables.VariableSpace;
import org.pentaho.di.core.xml.XMLHandler;
import org.pentaho.di.i18n.BaseMessages;
import org.pentaho.di.repository.ObjectId;
import org.pentaho.di.repository.Repository;
import org.pentaho.di.trans.Trans;
import org.pentaho.di.trans.TransMeta;
import org.pentaho.di.trans.step.BaseStepMeta;
import org.pentaho.di.trans.step.StepDataInterface;
import org.pentaho.di.trans.step.StepInterface;
import org.pentaho.di.trans.step.StepMeta;
import org.pentaho.di.trans.step.StepMetaInterface;
import org.pentaho.metastore.api.IMetaStore;
import org.w3c.dom.Node;
/*
* Created on 30-06-2008
*
*/
public class FieldsChangeSequenceMeta extends BaseStepMeta implements StepMetaInterface {
private static Class PKG = FieldsChangeSequenceMeta.class; // for i18n purposes, needed by Translator2!!
/** by which fields to display? */
private String[] fieldName;
private String resultfieldName;
private String start;
private String increment;
public FieldsChangeSequenceMeta() {
super(); // allocate BaseStepMeta
}
public String getStart() {
return start;
}
/**
* @return Returns the resultfieldName.
*/
public String getResultFieldName() {
return resultfieldName;
}
/**
* @param resultName
* The resultfieldName to set.
*/
public void setResultFieldName( String resultfieldName ) {
this.resultfieldName = resultfieldName;
}
@Override
public void loadXML( Node stepnode, List databases, IMetaStore metaStore ) throws KettleXMLException {
readData( stepnode );
}
@Override
public Object clone() {
FieldsChangeSequenceMeta retval = (FieldsChangeSequenceMeta) super.clone();
int nrfields = fieldName.length;
retval.allocate( nrfields );
System.arraycopy( fieldName, 0, retval.fieldName, 0, nrfields );
return retval;
}
public void allocate( int nrfields ) {
fieldName = new String[nrfields];
}
/**
* @return Returns the fieldName.
*/
public String[] getFieldName() {
return fieldName;
}
/**
* @param fieldName
* The fieldName to set.
*/
public void setFieldName( String[] fieldName ) {
this.fieldName = fieldName;
}
public void setStart( String start ) {
this.start = start;
}
public void setIncrement( String increment ) {
this.increment = increment;
}
public String getIncrement() {
return increment;
}
private void readData( Node stepnode ) throws KettleXMLException {
try {
start = XMLHandler.getTagValue( stepnode, "start" );
increment = XMLHandler.getTagValue( stepnode, "increment" );
resultfieldName = XMLHandler.getTagValue( stepnode, "resultfieldName" );
Node fields = XMLHandler.getSubNode( stepnode, "fields" );
int nrfields = XMLHandler.countNodes( fields, "field" );
allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
Node fnode = XMLHandler.getSubNodeByNr( fields, "field", i );
fieldName[i] = XMLHandler.getTagValue( fnode, "name" );
}
} catch ( Exception e ) {
throw new KettleXMLException( "Unable to load step info from XML", e );
}
}
@Override
public String getXML() {
StringBuilder retval = new StringBuilder();
retval.append( " " + XMLHandler.addTagValue( "start", start ) );
retval.append( " " + XMLHandler.addTagValue( "increment", increment ) );
retval.append( " " + XMLHandler.addTagValue( "resultfieldName", resultfieldName ) );
retval.append( " " + Const.CR );
for ( int i = 0; i < fieldName.length; i++ ) {
retval.append( " " + Const.CR );
retval.append( " " + XMLHandler.addTagValue( "name", fieldName[i] ) );
retval.append( " " + Const.CR );
}
retval.append( " " + Const.CR );
return retval.toString();
}
@Override
public void setDefault() {
resultfieldName = null;
start = "1";
increment = "1";
int nrfields = 0;
allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
fieldName[i] = "field" + i;
}
}
@Override
public void readRep( Repository rep, IMetaStore metaStore, ObjectId id_step, List databases ) throws KettleException {
try {
start = rep.getStepAttributeString( id_step, "start" );
increment = rep.getStepAttributeString( id_step, "increment" );
resultfieldName = rep.getStepAttributeString( id_step, "resultfieldName" );
int nrfields = rep.countNrStepAttributes( id_step, "field_name" );
allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
fieldName[i] = rep.getStepAttributeString( id_step, i, "field_name" );
}
} catch ( Exception e ) {
throw new KettleException( "Unexpected error reading step information from the repository", e );
}
}
@Override
public void saveRep( Repository rep, IMetaStore metaStore, ObjectId id_transformation, ObjectId id_step ) throws KettleException {
try {
rep.saveStepAttribute( id_transformation, id_step, "start", start );
rep.saveStepAttribute( id_transformation, id_step, "increment", increment );
rep.saveStepAttribute( id_transformation, id_step, "resultfieldName", resultfieldName );
for ( int i = 0; i < fieldName.length; i++ ) {
rep.saveStepAttribute( id_transformation, id_step, i, "field_name", fieldName[i] );
}
} catch ( Exception e ) {
throw new KettleException( "Unable to save step information to the repository for id_step=" + id_step, e );
}
}
@Override
public void getFields( RowMetaInterface r, String name, RowMetaInterface[] info, StepMeta nextStep,
VariableSpace space, Repository repository, IMetaStore metaStore ) {
if ( !Utils.isEmpty( resultfieldName ) ) {
ValueMetaInterface v = new ValueMetaInteger( resultfieldName );
v.setLength( ValueMetaInterface.DEFAULT_INTEGER_LENGTH, 0 );
v.setOrigin( name );
r.addValueMeta( v );
}
}
@Override
public void check( List remarks, TransMeta transMeta, StepMeta stepMeta,
RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info, VariableSpace space,
Repository repository, IMetaStore metaStore ) {
CheckResult cr;
String error_message = "";
if ( Utils.isEmpty( resultfieldName ) ) {
error_message = BaseMessages.getString( PKG, "FieldsChangeSequenceMeta.CheckResult.ResultFieldMissing" );
cr = new CheckResult( CheckResult.TYPE_RESULT_ERROR, error_message, stepMeta );
} else {
error_message = BaseMessages.getString( PKG, "FieldsChangeSequenceMeta.CheckResult.ResultFieldOK" );
cr = new CheckResult( CheckResult.TYPE_RESULT_OK, error_message, stepMeta );
}
remarks.add( cr );
if ( prev == null || prev.size() == 0 ) {
cr =
new CheckResult( CheckResult.TYPE_RESULT_WARNING, BaseMessages.getString(
PKG, "FieldsChangeSequenceMeta.CheckResult.NotReceivingFields" ), stepMeta );
remarks.add( cr );
} else {
cr =
new CheckResult( CheckResult.TYPE_RESULT_OK, BaseMessages.getString(
PKG, "FieldsChangeSequenceMeta.CheckResult.StepRecevingData", prev.size() + "" ), stepMeta );
remarks.add( cr );
boolean error_found = false;
error_message = "";
// Starting from selected fields in ...
for ( int i = 0; i < fieldName.length; i++ ) {
int idx = prev.indexOfValue( fieldName[i] );
if ( idx < 0 ) {
error_message += "\t\t" + fieldName[i] + Const.CR;
error_found = true;
}
}
if ( error_found ) {
error_message =
BaseMessages.getString( PKG, "FieldsChangeSequenceMeta.CheckResult.FieldsFound", error_message );
cr = new CheckResult( CheckResult.TYPE_RESULT_ERROR, error_message, stepMeta );
remarks.add( cr );
} else {
if ( fieldName.length > 0 ) {
cr =
new CheckResult( CheckResult.TYPE_RESULT_OK, BaseMessages.getString(
PKG, "FieldsChangeSequenceMeta.CheckResult.AllFieldsFound" ), stepMeta );
remarks.add( cr );
} else {
cr =
new CheckResult( CheckResult.TYPE_RESULT_WARNING, BaseMessages.getString(
PKG, "FieldsChangeSequenceMeta.CheckResult.NoFieldsEntered" ), stepMeta );
remarks.add( cr );
}
}
}
// See if we have input streams leading to this step!
if ( input.length > 0 ) {
cr =
new CheckResult( CheckResult.TYPE_RESULT_OK, BaseMessages.getString(
PKG, "FieldsChangeSequenceMeta.CheckResult.StepRecevingData2" ), stepMeta );
remarks.add( cr );
} else {
cr =
new CheckResult( CheckResult.TYPE_RESULT_ERROR, BaseMessages.getString(
PKG, "FieldsChangeSequenceMeta.CheckResult.NoInputReceivedFromOtherSteps" ), stepMeta );
remarks.add( cr );
}
}
@Override
public StepInterface getStep( StepMeta stepMeta, StepDataInterface stepDataInterface, int cnr,
TransMeta transMeta, Trans trans ) {
return new FieldsChangeSequence( stepMeta, stepDataInterface, cnr, transMeta, trans );
}
@Override
public StepDataInterface getStepData() {
return new FieldsChangeSequenceData();
}
@Override
public boolean supportsErrorHandling() {
return true;
}
}