/*! ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2015 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.
*
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package org.pentaho.di.trans.steps.addxml;
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.annotations.Step;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.core.exception.KettleStepException;
import org.pentaho.di.core.exception.KettleXMLException;
import org.pentaho.di.core.injection.Injection;
import org.pentaho.di.core.injection.InjectionDeep;
import org.pentaho.di.core.injection.InjectionSupported;
import org.pentaho.di.core.row.RowMetaInterface;
import org.pentaho.di.core.row.ValueMeta;
import org.pentaho.di.core.row.ValueMetaInterface;
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;
/**
* This class knows how to handle the MetaData for the XML output step
*
* @since 14-jan-2006
*
*/
@Step( id = "AddXML", image = "add_xml.svg", i18nPackageName = "org.pentaho.di.trans.steps.addxml",
name = "AddXML.name", description = "AddXML.description", categoryDescription = "AddXML.category",
documentationUrl = "http://wiki.pentaho.com/display/EAI/Add+XML" )
@InjectionSupported( localizationPrefix = "AddXMLMeta.Injection.", groups = { "OUTPUT_FIELDS" } )
public class AddXMLMeta extends BaseStepMeta implements StepMetaInterface {
private static Class<?> PKG = AddXMLMeta.class; // for i18n purposes, needed by Translator2!!
/** The base name of the output file */
/** Flag: ommit the XML Header */
@Injection( name = "OMIT_XML_HEADER" )
private boolean omitXMLheader;
/** Flag: omit null elements from the xml result */
@Injection( name = "OMIT_NULL_VALUES" )
private boolean omitNullValues;
/** The encoding to use for reading: null or empty string means system default encoding */
@Injection( name = "ENCODING" )
private String encoding;
/** The name value containing the resulting XML fragment */
@Injection( name = "VALUE_NAME" )
private String valueName;
/** The name of the repeating row XML element */
@Injection( name = "ROOT_NODE" )
private String rootNode;
/* THE FIELD SPECIFICATIONS ... */
/** The output fields */
@InjectionDeep
private XMLField[] outputFields;
public AddXMLMeta() {
super(); // allocate BaseStepMeta
}
/**
* @return Returns the zipped.
*/
public boolean isOmitXMLheader() {
return omitXMLheader;
}
/**
* @param omitXMLheader
* The omit XML header flag to set.
*/
public void setOmitXMLheader( boolean omitXMLheader ) {
this.omitXMLheader = omitXMLheader;
}
public void setOmitNullValues( boolean omitNullValues ) {
this.omitNullValues = omitNullValues;
}
public boolean isOmitNullValues() {
return omitNullValues;
}
/**
* @return Returns the outputFields.
*/
public XMLField[] getOutputFields() {
return outputFields;
}
/**
* @param outputFields
* The outputFields to set.
*/
public void setOutputFields( XMLField[] outputFields ) {
this.outputFields = outputFields;
}
public void loadXML( Node stepnode, List<DatabaseMeta> databases, IMetaStore metaStore ) throws KettleXMLException {
readData( stepnode );
}
public void allocate( int nrfields ) {
outputFields = new XMLField[nrfields];
}
public Object clone() {
AddXMLMeta retval = (AddXMLMeta) super.clone();
int nrfields = outputFields.length;
retval.allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
retval.outputFields[i] = (XMLField) outputFields[i].clone();
}
return retval;
}
private void readData( Node stepnode ) throws KettleXMLException {
try {
encoding = XMLHandler.getTagValue( stepnode, "encoding" );
valueName = XMLHandler.getTagValue( stepnode, "valueName" );
rootNode = XMLHandler.getTagValue( stepnode, "xml_repeat_element" );
omitXMLheader = "Y".equalsIgnoreCase( XMLHandler.getTagValue( stepnode, "file", "omitXMLheader" ) );
omitNullValues = "Y".equalsIgnoreCase( XMLHandler.getTagValue( stepnode, "file", "omitNullValues" ) );
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 );
outputFields[i] = new XMLField();
outputFields[i].setFieldName( XMLHandler.getTagValue( fnode, "name" ) );
outputFields[i].setElementName( XMLHandler.getTagValue( fnode, "element" ) );
outputFields[i].setType( XMLHandler.getTagValue( fnode, "type" ) );
outputFields[i].setFormat( XMLHandler.getTagValue( fnode, "format" ) );
outputFields[i].setCurrencySymbol( XMLHandler.getTagValue( fnode, "currency" ) );
outputFields[i].setDecimalSymbol( XMLHandler.getTagValue( fnode, "decimal" ) );
outputFields[i].setGroupingSymbol( XMLHandler.getTagValue( fnode, "group" ) );
outputFields[i].setNullString( XMLHandler.getTagValue( fnode, "nullif" ) );
outputFields[i].setLength( Const.toInt( XMLHandler.getTagValue( fnode, "length" ), -1 ) );
outputFields[i].setPrecision( Const.toInt( XMLHandler.getTagValue( fnode, "precision" ), -1 ) );
outputFields[i].setAttribute( "Y".equalsIgnoreCase( XMLHandler.getTagValue( fnode, "attribute" ) ) );
outputFields[i].setAttributeParentName( XMLHandler.getTagValue( fnode, "attributeParentName" ) );
}
} catch ( Exception e ) {
throw new KettleXMLException( "Unable to load step info from XML", e );
}
}
public void setDefault() {
omitXMLheader = true;
omitNullValues = false;
encoding = Const.XML_ENCODING;
valueName = "xmlvaluename";
rootNode = "Row";
int nrfields = 0;
allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
outputFields[i] = new XMLField();
outputFields[i].setFieldName( "field" + i );
outputFields[i].setElementName( "field" + i );
outputFields[i].setType( "Number" );
outputFields[i].setFormat( " 0,000,000.00;-0,000,000.00" );
outputFields[i].setCurrencySymbol( "" );
outputFields[i].setDecimalSymbol( "," );
outputFields[i].setGroupingSymbol( "." );
outputFields[i].setNullString( "" );
outputFields[i].setLength( -1 );
outputFields[i].setPrecision( -1 );
outputFields[i].setAttribute( false );
outputFields[i].setElementName( "field" + i );
}
}
public void getFields( RowMetaInterface row, String name, RowMetaInterface[] info, StepMeta nextStep,
VariableSpace space, Repository repository, IMetaStore metaStore ) throws KettleStepException {
ValueMetaInterface v = new ValueMeta( this.getValueName(), ValueMetaInterface.TYPE_STRING );
v.setOrigin( name );
row.addValueMeta( v );
}
public String getXML() {
StringBuffer retval = new StringBuffer( 500 );
retval.append( " " ).append( XMLHandler.addTagValue( "encoding", encoding ) );
retval.append( " " ).append( XMLHandler.addTagValue( "valueName", valueName ) );
retval.append( " " ).append( XMLHandler.addTagValue( "xml_repeat_element", rootNode ) );
retval.append( " <file>" ).append( Const.CR );
retval.append( " " ).append( XMLHandler.addTagValue( "omitXMLheader", omitXMLheader ) );
retval.append( " " ).append( XMLHandler.addTagValue( "omitNullValues", omitNullValues ) );
retval.append( " </file>" ).append( Const.CR );
retval.append( " <fields>" ).append( Const.CR );
for ( int i = 0; i < outputFields.length; i++ ) {
XMLField field = outputFields[i];
if ( field.getFieldName() != null && field.getFieldName().length() != 0 ) {
retval.append( " <field>" ).append( Const.CR );
retval.append( " " ).append( XMLHandler.addTagValue( "name", field.getFieldName() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "element", field.getElementName() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "type", field.getTypeDesc() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "format", field.getFormat() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "currency", field.getCurrencySymbol() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "decimal", field.getDecimalSymbol() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "group", field.getGroupingSymbol() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "nullif", field.getNullString() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "length", field.getLength() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "precision", field.getPrecision() ) );
retval.append( " " ).append( XMLHandler.addTagValue( "attribute", field.isAttribute() ) );
retval.append( " " ).append(
XMLHandler.addTagValue( "attributeParentName", field.getAttributeParentName() ) );
retval.append( " </field>" ).append( Const.CR );
}
}
retval.append( " </fields>" + Const.CR );
return retval.toString();
}
public void readRep( Repository rep, IMetaStore metaStore, ObjectId id_step, List<DatabaseMeta> databases )
throws KettleException {
try {
encoding = rep.getStepAttributeString( id_step, "encoding" );
valueName = rep.getStepAttributeString( id_step, "valueName" );
rootNode = rep.getStepAttributeString( id_step, "xml_repeat_element" );
omitXMLheader = rep.getStepAttributeBoolean( id_step, "omitXMLheader" );
omitNullValues = rep.getStepAttributeBoolean( id_step, "omitNullValues" );
int nrfields = rep.countNrStepAttributes( id_step, "field_name" );
allocate( nrfields );
for ( int i = 0; i < nrfields; i++ ) {
outputFields[i] = new XMLField();
outputFields[i].setFieldName( rep.getStepAttributeString( id_step, i, "field_name" ) );
outputFields[i].setElementName( rep.getStepAttributeString( id_step, i, "field_element" ) );
outputFields[i].setType( rep.getStepAttributeString( id_step, i, "field_type" ) );
outputFields[i].setFormat( rep.getStepAttributeString( id_step, i, "field_format" ) );
outputFields[i].setCurrencySymbol( rep.getStepAttributeString( id_step, i, "field_currency" ) );
outputFields[i].setDecimalSymbol( rep.getStepAttributeString( id_step, i, "field_decimal" ) );
outputFields[i].setGroupingSymbol( rep.getStepAttributeString( id_step, i, "field_group" ) );
outputFields[i].setNullString( rep.getStepAttributeString( id_step, i, "field_nullif" ) );
outputFields[i].setLength( (int) rep.getStepAttributeInteger( id_step, i, "field_length" ) );
outputFields[i].setPrecision( (int) rep.getStepAttributeInteger( id_step, i, "field_precision" ) );
outputFields[i].setAttribute( rep.getStepAttributeBoolean( id_step, i, "field_attribute" ) );
outputFields[i].setAttributeParentName( rep.getStepAttributeString( id_step, i, "field_attributeName" ) );
}
} catch ( Exception e ) {
throw new KettleException( "Unexpected error reading step information from the repository", e );
}
}
public void saveRep( Repository rep, IMetaStore metaStore, ObjectId id_transformation, ObjectId id_step )
throws KettleException {
try {
rep.saveStepAttribute( id_transformation, id_step, "encoding", encoding );
rep.saveStepAttribute( id_transformation, id_step, "valueName", valueName );
rep.saveStepAttribute( id_transformation, id_step, "xml_repeat_element", rootNode );
rep.saveStepAttribute( id_transformation, id_step, "omitXMLheader", omitXMLheader );
rep.saveStepAttribute( id_transformation, id_step, "omitNullValues", omitNullValues );
for ( int i = 0; i < outputFields.length; i++ ) {
XMLField field = outputFields[i];
rep.saveStepAttribute( id_transformation, id_step, i, "field_name", field.getFieldName() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_element", field.getElementName() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_type", field.getTypeDesc() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_format", field.getFormat() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_currency", field.getCurrencySymbol() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_decimal", field.getDecimalSymbol() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_group", field.getGroupingSymbol() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_nullif", field.getNullString() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_length", field.getLength() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_precision", field.getPrecision() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_attribute", field.isAttribute() );
rep.saveStepAttribute( id_transformation, id_step, i, "field_attributeName", field.getAttributeParentName() );
}
} catch ( Exception e ) {
throw new KettleException( "Unable to save step information to the repository for id_step=" + id_step, e );
}
}
public void check( List<CheckResultInterface> remarks, TransMeta transMeta, StepMeta stepMeta, RowMetaInterface prev,
String[] input, String[] output, RowMetaInterface info, VariableSpace space, Repository repository,
IMetaStore metaStore ) {
CheckResult cr;
// TODO - add checks for empty fieldnames
// Check output fields
if ( prev != null && prev.size() > 0 ) {
cr =
new CheckResult( CheckResult.TYPE_RESULT_OK, BaseMessages.getString( PKG,
"AddXMLMeta.CheckResult.FieldsReceived", "" + prev.size() ), stepMeta );
remarks.add( cr );
String error_message = "";
boolean error_found = false;
// Starting from selected fields in ...
for ( int i = 0; i < outputFields.length; i++ ) {
int idx = prev.indexOfValue( outputFields[i].getFieldName() );
if ( idx < 0 ) {
error_message += "\t\t" + outputFields[i].getFieldName() + Const.CR;
error_found = true;
}
}
if ( error_found ) {
error_message = BaseMessages.getString( PKG, "AddXMLMeta.CheckResult.FieldsNotFound", error_message );
cr = new CheckResult( CheckResult.TYPE_RESULT_ERROR, error_message, stepMeta );
remarks.add( cr );
} else {
cr =
new CheckResult( CheckResult.TYPE_RESULT_OK, BaseMessages.getString( PKG,
"AddXMLMeta.CheckResult.AllFieldsFound" ), 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,
"AddXMLMeta.CheckResult.ExpectedInputOk" ), stepMeta );
remarks.add( cr );
} else {
cr =
new CheckResult( CheckResult.TYPE_RESULT_ERROR, BaseMessages.getString( PKG,
"AddXMLMeta.CheckResult.ExpectedInputError" ), stepMeta );
remarks.add( cr );
}
cr =
new CheckResult( CheckResult.TYPE_RESULT_COMMENT, BaseMessages.getString( PKG,
"AddXMLMeta.CheckResult.FilesNotChecked" ), stepMeta );
remarks.add( cr );
}
public StepInterface getStep( StepMeta stepMeta, StepDataInterface stepDataInterface, int cnr, TransMeta transMeta,
Trans trans ) {
return new AddXML( stepMeta, stepDataInterface, cnr, transMeta, trans );
}
public StepDataInterface getStepData() {
return new AddXMLData();
}
public String getEncoding() {
return encoding;
}
public void setEncoding( String encoding ) {
this.encoding = encoding;
}
/**
* @return Returns the rootNode.
*/
public String getRootNode() {
return rootNode;
}
/**
* @param rootNode
* The root node to set.
*/
public void setRootNode( String rootNode ) {
this.rootNode = rootNode;
}
public String getValueName() {
return valueName;
}
public void setValueName( String valueName ) {
this.valueName = valueName;
}
}