/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you 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.
 *
 * (c) 2015 - Interseroh and Crowdcode
 */
package de.interseroh.report.controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.core.convert.ConversionException;
import org.springframework.core.convert.ConversionService;
import org.springframework.stereotype.Component;

import de.interseroh.report.domain.ParameterForm;
import de.interseroh.report.domain.ScalarParameter;
import de.interseroh.report.domain.visitors.AbstractParameterVisitor;
import de.interseroh.report.formatters.DisplayFormatHolder;

/**
 * @author Ingo Düppe (Crowdcode)
 */
@Component
public class ParameterFormFormatter {

	private static final Logger logger = LoggerFactory
			.getLogger(ParameterFormFormatter.class);

	@Autowired
	private ConversionService conversionService;

	/**
	 * Checks if value is not null, is not an empty array
	 *
	 * @param value
	 * @return true if value contains a value
	 */
	public static boolean isNotNullOrEmptyArray(Object value) {
		return value != null //
				&& (!value.getClass().isArray()
				|| ((Object[]) value).length > 0);
	}

	public void format(ParameterForm parameterForm) {

		// Convert parameter values to required type
		parameterForm.accept(new AbstractParameterVisitor() {
			@Override
			public <V, T> void visit(ScalarParameter<V, T> parameter) {
				Class<V> valueType = parameter.getValueType();
				Class<T> textType = parameter.getTextType();

				convertValue(parameter, valueType, textType);

				convertDefaultValue(parameter, valueType, textType);
			}

			@SuppressWarnings("unchecked")
			private <V, T> void convertValue(ScalarParameter<V, T> parameter,
					Class<V> valueType, Class<T> textType) {

				DisplayFormatHolder
						.setDisplayFormat(parameter.getDisplayFormat());

				V value = parameter.getValue();
				if (isNotNullOrEmptyArray(value) && //
						conversionService.canConvert(valueType, textType)) {
					try {
						T formatted = conversionService
								.convert(value, textType);
						parameter.setText(formatted);
					} catch (ConversionException ce) {
						parameter.setText((T) value.toString());
					}
				}
			}

			private <V, T> void convertDefaultValue(
					ScalarParameter<V, T> parameter, Class<V> valueType,
					Class<T> textType) {

				DisplayFormatHolder
						.setDisplayFormat(parameter.getDisplayFormat());

				V defaultValue = parameter.getDefaultValue();
				if (defaultValue != null && conversionService
						.canConvert(valueType, textType)) {
					try {
						T formatted = conversionService
								.convert(defaultValue, textType);
						parameter.setDefaultText(formatted);
					} catch (ConversionException ce) {
						logger.debug(ce.getMessage(), ce);
					}
				}
			}
		});
	}

}

@@ -2916,24 +2916,65 @@
 ption ce) %7B%0A
+%09%09%09%09%09%09logger.trace(ce.getMessage(), ce);%0A
 %09%09%09%09%09%09parame
@@ -3569,13 +3569,13 @@
 ger.
-debug
+trace
 (ce.

fix bug