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JSefa (Java Simple exchange format api) is a simple library for stream-based serialization of java objects to XML, CSV, FLR or any other format and back again using an iterator-style interface independent of the serialization format. The mapping between java object types and types of the serialization format (e. g. xml complex element types) can be defined either by annotating the java classes or programmatically using a simple API. The current implementation supports XML, CSV and FLR - for XML it is based on JSR 173.

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/*
 * Copyright 2007 the original author or authors.
 *
 * 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 net.sf.jsefa.flr;

import java.util.Map;

import net.sf.jsefa.SerializationException;
import net.sf.jsefa.common.mapping.SimpleTypeMapping;
import net.sf.jsefa.flr.config.FlrConfiguration;
import net.sf.jsefa.flr.lowlevel.Align;
import net.sf.jsefa.flr.lowlevel.FlrLowLevelSerializer;
import net.sf.jsefa.flr.mapping.FlrSimpleTypeMapping;
import net.sf.jsefa.rbf.RbfSerializerImpl;
import net.sf.jsefa.rbf.mapping.RbfEntryPoint;

/**
 * Default implementation of {@link FlrSerializer} based on {@link RbfSerializerImpl}.
 * 
 * @author Norman Lahme-Huetig
 * 
 */

public final class FlrSerializerImpl extends RbfSerializerImpl implements FlrSerializer {

    FlrSerializerImpl(FlrConfiguration config, Map, RbfEntryPoint> entryPoints,
            FlrLowLevelSerializer lowLevelSerializer) {
        super(config, entryPoints, lowLevelSerializer);
    }

    /**
     * {@inheritDoc}
     */
    protected void writeSimpleValue(Object object, SimpleTypeMapping mapping) {
        FlrSimpleTypeMapping flrMapping = (FlrSimpleTypeMapping) mapping;
        String value = flrMapping.getSimpleTypeConverter().toString(object);
        if (value == null) {
            value = "";
        }
        /* check the value length */
        if(value.length() > flrMapping.getLength() && flrMapping.isCrop() == false ){
        	/* the user doesn't wish the value to be cropped - default behavior */
        	throw new SerializationException("The value '" + value + "' is longer (" + value.length() + 
        			") than the specified column width (" + flrMapping.getLength() + ") [crop" + "=" + flrMapping.isCrop() + "].");
        }
        
        /* the value may be cropped by lowlevel serializer */
        getLowLevelSerializer().writeField(value, flrMapping.getLength(), flrMapping.getAlign(), flrMapping
                .getPadCharacter());
    }

    /**
     * {@inheritDoc}
     */
    @Override
    protected void writePrefix(String prefix) {
        getLowLevelSerializer().writeField(prefix, prefix.length(), Align.LEFT, ' ');
    }

}