/* ******************************************************************************
*
* Pentaho Data Integration
*
* Copyright (C) 2002-2016 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
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package org.pentaho.di.base;
import org.pentaho.di.core.database.DatabaseMeta;
import org.pentaho.di.core.exception.KettleException;
import org.pentaho.di.trans.steps.loadsave.getter.Getter;
import org.pentaho.di.trans.steps.loadsave.initializer.InitializerInterface;
import org.pentaho.di.trans.steps.loadsave.setter.Setter;
import org.pentaho.di.trans.steps.loadsave.validator.DefaultFieldLoadSaveValidatorFactory;
import org.pentaho.di.trans.steps.loadsave.validator.FieldLoadSaveValidator;
import org.pentaho.di.trans.steps.loadsave.validator.FieldLoadSaveValidatorFactory;
import org.pentaho.test.util.JavaBeanManipulator;
import java.lang.reflect.Method;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author Andrey Khayrutdinov
*/
public abstract class LoadSaveBase<T> {
final Class<T> clazz;
protected final List<String> xmlAttributes;
protected final List<String> repoAttributes;
protected final JavaBeanManipulator<T> manipulator;
protected final FieldLoadSaveValidatorFactory fieldLoadSaveValidatorFactory;
protected final List<DatabaseMeta> databases;
protected final InitializerInterface<T> initializer;
public LoadSaveBase( Class<T> clazz,
List<String> commonAttributes, List<String> xmlAttributes, List<String> repoAttributes,
Map<String, String> getterMap, Map<String, String> setterMap,
Map<String, FieldLoadSaveValidator<?>> fieldLoadSaveValidatorAttributeMap,
Map<String, FieldLoadSaveValidator<?>> fieldLoadSaveValidatorTypeMap,
InitializerInterface<T> initializer ) {
this.clazz = clazz;
this.xmlAttributes = concat( commonAttributes, xmlAttributes );
this.repoAttributes = concat( commonAttributes, repoAttributes );
this.manipulator =
new JavaBeanManipulator<T>( clazz, concat( this.xmlAttributes, repoAttributes ), getterMap, setterMap );
this.initializer = initializer;
Map<Getter<?>, FieldLoadSaveValidator<?>> fieldLoadSaveValidatorMethodMap =
new HashMap<Getter<?>, FieldLoadSaveValidator<?>>( fieldLoadSaveValidatorAttributeMap.size() );
for ( Map.Entry<String, FieldLoadSaveValidator<?>> entry : fieldLoadSaveValidatorAttributeMap.entrySet() ) {
fieldLoadSaveValidatorMethodMap.put( manipulator.getGetter( entry.getKey() ), entry.getValue() );
}
this.fieldLoadSaveValidatorFactory =
new DefaultFieldLoadSaveValidatorFactory( fieldLoadSaveValidatorMethodMap, fieldLoadSaveValidatorTypeMap );
databases = new ArrayList<DatabaseMeta>();
}
public LoadSaveBase( Class<T> clazz,
List<String> commonAttributes, List<String> xmlAttributes, List<String> repoAttributes,
Map<String, String> getterMap, Map<String, String> setterMap,
Map<String, FieldLoadSaveValidator<?>> fieldLoadSaveValidatorAttributeMap,
Map<String, FieldLoadSaveValidator<?>> fieldLoadSaveValidatorTypeMap ) {
this( clazz, commonAttributes, xmlAttributes, repoAttributes, getterMap, setterMap,
fieldLoadSaveValidatorAttributeMap, fieldLoadSaveValidatorTypeMap, null );
}
public LoadSaveBase( Class<T> clazz, List<String> commonAttributes ) {
this( clazz, commonAttributes, new ArrayList<String>(), new ArrayList<String>(),
new HashMap<String, String>(), new HashMap<String, String>(),
new HashMap<String, FieldLoadSaveValidator<?>>(), new HashMap<String, FieldLoadSaveValidator<?>>() );
}
public T createMeta() {
try {
return clazz.newInstance();
} catch ( Exception e ) {
throw new RuntimeException( "Unable to create meta of class " + clazz.getCanonicalName(), e );
}
}
@SuppressWarnings( { "unchecked" } )
protected Map<String, FieldLoadSaveValidator<?>> createValidatorMapAndInvokeSetters( List<String> attributes,
T metaToSave ) {
Map<String, FieldLoadSaveValidator<?>> validatorMap = new HashMap<String, FieldLoadSaveValidator<?>>();
databases.clear();
for ( String attribute : attributes ) {
Getter<?> getter = manipulator.getGetter( attribute );
@SuppressWarnings( "rawtypes" )
Setter setter = manipulator.getSetter( attribute );
FieldLoadSaveValidator<?> validator = fieldLoadSaveValidatorFactory.createValidator( getter );
try {
Object testValue = validator.getTestObject();
//no-inspection unchecked
setter.set( metaToSave, testValue );
if ( testValue instanceof DatabaseMeta ) {
addDatabase( (DatabaseMeta) testValue );
} else if ( testValue instanceof DatabaseMeta[] ) {
addDatabase( (DatabaseMeta[]) testValue );
}
} catch ( Exception e ) {
throw new RuntimeException( "Unable to invoke setter for " + attribute, e );
}
validatorMap.put( attribute, validator );
}
return validatorMap;
}
protected void validateLoadedMeta( List<String> attributes, Map<String, FieldLoadSaveValidator<?>> validatorMap,
T metaSaved, T metaLoaded ) {
for ( String attribute : attributes ) {
try {
Getter<?> getterMethod = manipulator.getGetter( attribute );
Object originalValue = getterMethod.get( metaSaved );
Object value = getterMethod.get( metaLoaded );
FieldLoadSaveValidator<?> validator = validatorMap.get( attribute );
Method[] validatorMethods = validator.getClass().getMethods();
Method validatorMethod = null;
for ( Method method : validatorMethods ) {
if ( "validateTestObject".equals( method.getName() ) ) {
Class<?>[] types = method.getParameterTypes();
if ( types.length == 2 ) {
if ( types[ 1 ] == Object.class
&& ( originalValue == null || types[ 0 ].isAssignableFrom( originalValue.getClass() ) ) ) {
validatorMethod = method;
break;
}
}
}
}
if ( validatorMethod == null ) {
throw new RuntimeException( "Couldn't find proper validateTestObject method on "
+ validator.getClass().getCanonicalName() );
}
if ( !( (Boolean) validatorMethod.invoke( validator, originalValue, value ) ) ) {
throw new KettleException( "Attribute " + attribute + " started with value "
+ originalValue + " ended with value " + value );
}
} catch ( Exception e ) {
throw new RuntimeException( "Error validating " + attribute, e );
}
}
}
private static <E> List<E> concat( List<E> list1, List<E> list2 ) {
List<E> result = new ArrayList<E>( list1.size() + list2.size() );
result.addAll( list1 );
result.addAll( list2 );
return result;
}
protected void addDatabase( DatabaseMeta db ) {
if ( !databases.contains( db ) ) {
databases.add( db );
}
}
protected void addDatabase( DatabaseMeta[] db ) {
if ( db != null ) {
for ( DatabaseMeta meta : db ) {
addDatabase( meta );
}
}
}
}