com.univocity.parsers.common.processor.BeanWriterProcessor Maven / Gradle / Ivy
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/*******************************************************************************
* Copyright 2014 uniVocity Software Pty Ltd
*
* 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 com.univocity.parsers.common.processor;
import com.univocity.parsers.annotations.helpers.*;
import com.univocity.parsers.common.*;
import com.univocity.parsers.common.processor.core.*;
/**
*
* A {@link RowWriterProcessor} implementation for converting annotated java objects into object arrays suitable for writing in any implementation of {@link AbstractWriter}.
* The class type of the object must contain the annotations provided in {@link com.univocity.parsers.annotations}.
*
*
For any given java bean instance, this processor will read and convert annotated fields into an object array.
*
*
* @param the annotated class type.
*
* @see AbstractWriter
* @see RowWriterProcessor
* @see BeanConversionProcessor
*
* @author uniVocity Software Pty Ltd - [email protected]
*
*/
public class BeanWriterProcessor extends BeanConversionProcessor implements RowWriterProcessor {
/**
* Initializes the BeanWriterProcessor with the annotated bean class
* @param beanType the class annotated with one or more of the annotations provided in {@link com.univocity.parsers.annotations}.
*/
public BeanWriterProcessor(Class beanType) {
super(beanType, MethodFilter.ONLY_GETTERS);
}
/**
* Converts the java bean instance into a sequence of values for writing.
*
* @param input an instance of the type defined in this class constructor.
* @param headers All field names used to produce records in a given destination. May be null if no headers have been defined in {@link CommonSettings#getHeaders()}
* @param indexesToWrite The indexes of the headers that are actually being written. May be null if no fields have been selected using {@link CommonSettings#selectFields(String...)} or {@link CommonSettings#selectIndexes(Integer...)}
* @return a row of objects containing the values extracted from the java bean
*/
@Override
public Object[] write(T input, String[] headers, int[] indexesToWrite) {
if (!initialized) {
super.initialize(headers);
}
return reverseConversions(input, headers, indexesToWrite);
}
}