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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.rowsfromresult;
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.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.exception.KettlePluginException;
import org.pentaho.di.core.exception.KettleStepException;
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.ValueMetaFactory;
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 02-jun-2003
*
*/
public class RowsFromResultMeta extends BaseStepMeta implements StepMetaInterface {
private static Class PKG = RowsFromResult.class; // for i18n purposes, needed by Translator2!!
private String[] fieldname;
private int[] type;
private int[] length;
private int[] precision;
/**
* @return Returns the length.
*/
public int[] getLength() {
return length;
}
/**
* @param length
* The length to set.
*/
public void setLength( int[] length ) {
this.length = length;
}
/**
* @return Returns the name.
*/
public String[] getFieldname() {
return fieldname;
}
/**
* @param name
* The name to set.
*/
public void setFieldname( String[] name ) {
this.fieldname = name;
}
/**
* @return Returns the precision.
*/
public int[] getPrecision() {
return precision;
}
/**
* @param precision
* The precision to set.
*/
public void setPrecision( int[] precision ) {
this.precision = precision;
}
/**
* @return Returns the type.
*/
public int[] getType() {
return type;
}
/**
* @param type
* The type to set.
*/
public void setType( int[] type ) {
this.type = type;
}
public RowsFromResultMeta() {
super(); // allocate BaseStepMeta
}
public void loadXML( Node stepnode, List databases, IMetaStore metaStore ) throws KettleXMLException {
readData( stepnode );
}
public Object clone() {
RowsFromResultMeta retval = (RowsFromResultMeta) super.clone();
int nrFields = fieldname.length;
retval.allocate( nrFields );
System.arraycopy( fieldname, 0, retval.fieldname, 0, nrFields );
System.arraycopy( type, 0, retval.type, 0, nrFields );
System.arraycopy( length, 0, retval.length, 0, nrFields );
System.arraycopy( precision, 0, retval.precision, 0, nrFields );
return retval;
}
public void allocate( int nrFields ) {
fieldname = new String[nrFields];
type = new int[nrFields];
length = new int[nrFields];
precision = new int[nrFields];
}
public String getXML() {
StringBuilder retval = new StringBuilder();
retval.append( " " );
for ( int i = 0; i < fieldname.length; i++ ) {
retval.append( " " );
retval.append( " " + XMLHandler.addTagValue( "name", fieldname[i] ) );
retval.append( " " + XMLHandler.addTagValue( "type", ValueMetaFactory.getValueMetaName( type[i] ) ) );
retval.append( " " + XMLHandler.addTagValue( "length", length[i] ) );
retval.append( " " + XMLHandler.addTagValue( "precision", precision[i] ) );
retval.append( " " );
}
retval.append( " " );
return retval.toString();
}
private void readData( Node stepnode ) {
Node fields = XMLHandler.getSubNode( stepnode, "fields" );
int nrfields = XMLHandler.countNodes( fields, "field" );
allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
Node line = XMLHandler.getSubNodeByNr( fields, "field", i );
fieldname[i] = XMLHandler.getTagValue( line, "name" );
type[i] = ValueMetaFactory.getIdForValueMeta( XMLHandler.getTagValue( line, "type" ) );
length[i] = Const.toInt( XMLHandler.getTagValue( line, "length" ), -2 );
precision[i] = Const.toInt( XMLHandler.getTagValue( line, "precision" ), -2 );
}
}
public void setDefault() {
allocate( 0 );
}
public void readRep( Repository rep, IMetaStore metaStore, ObjectId id_step, List databases ) throws KettleException {
try {
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" );
type[i] = ValueMetaFactory.getIdForValueMeta( rep.getStepAttributeString( id_step, i, "field_type" ) );
length[i] = (int) rep.getStepAttributeInteger( id_step, i, "field_length" );
precision[i] = (int) rep.getStepAttributeInteger( id_step, i, "field_precision" );
}
} catch ( Exception e ) {
throw new KettleException( BaseMessages.getString(
PKG, "RowsFromResultMeta.Exception.ErrorReadingStepInfoFromRepository" ), e );
}
}
public void saveRep( Repository rep, IMetaStore metaStore, ObjectId id_transformation, ObjectId id_step ) throws KettleException {
try {
for ( int i = 0; i < fieldname.length; i++ ) {
rep.saveStepAttribute( id_transformation, id_step, i, "field_name", fieldname[i] );
rep.saveStepAttribute( id_transformation, id_step, i, "field_type",
ValueMetaFactory.getValueMetaName( type[i] ) );
rep.saveStepAttribute( id_transformation, id_step, i, "field_length", length[i] );
rep.saveStepAttribute( id_transformation, id_step, i, "field_precision", precision[i] );
}
} catch ( Exception e ) {
throw new KettleException( BaseMessages.getString(
PKG, "RowsFromResultMeta.Exception.UnableToSaveStepInfoToRepository" )
+ id_step, e );
}
}
public void getFields( RowMetaInterface r, String origin, RowMetaInterface[] info, StepMeta nextStep,
VariableSpace space, Repository repository, IMetaStore metaStore ) throws KettleStepException {
for ( int i = 0; i < this.fieldname.length; i++ ) {
ValueMetaInterface v;
try {
v = ValueMetaFactory.createValueMeta( fieldname[i], type[i], length[i], precision[i] );
v.setOrigin( origin );
r.addValueMeta( v );
} catch ( KettlePluginException e ) {
throw new KettleStepException( e );
}
}
}
public void check( List remarks, TransMeta transMeta, StepMeta stepMeta,
RowMetaInterface prev, String[] input, String[] output, RowMetaInterface info, VariableSpace space,
Repository repository, IMetaStore metaStore ) {
// See if we have input streams leading to this step!
if ( input.length > 0 ) {
CheckResult cr =
new CheckResult( CheckResultInterface.TYPE_RESULT_ERROR, BaseMessages.getString(
PKG, "RowsFromResultMeta.CheckResult.StepExpectingNoReadingInfoFromOtherSteps" ), stepMeta );
remarks.add( cr );
} else {
CheckResult cr =
new CheckResult( CheckResultInterface.TYPE_RESULT_OK, BaseMessages.getString(
PKG, "RowsFromResultMeta.CheckResult.NoInputReceivedError" ), stepMeta );
remarks.add( cr );
}
}
public StepInterface getStep( StepMeta stepMeta, StepDataInterface stepDataInterface, int cnr,
TransMeta transMeta, Trans trans ) {
return new RowsFromResult( stepMeta, stepDataInterface, cnr, transMeta, trans );
}
public StepDataInterface getStepData() {
return new RowsFromResultData();
}
}