/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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 org.seasar.framework.container.assembler;
import java.util.Arrays;
import java.util.List;
import java.util.Set;
import org.seasar.framework.beans.BeanDesc;
import org.seasar.framework.beans.IllegalPropertyRuntimeException;
import org.seasar.framework.beans.PropertyDesc;
import org.seasar.framework.container.ComponentDef;
import org.seasar.framework.container.ExternalContext;
import org.seasar.framework.container.PropertyAssembler;
import org.seasar.framework.exception.EmptyRuntimeException;
/**
* プロパティアセンブラの抽象クラスです。
*
* @author higa
*
*/
public abstract class AbstractPropertyAssembler extends AbstractAssembler
implements PropertyAssembler {
/**
* @param componentDef
*/
public AbstractPropertyAssembler(ComponentDef componentDef) {
super(componentDef);
}
/**
* {@link ExternalContext}のデータをプロパティに自動設定します。
*
* @param beanDesc
* @param componentDef
* @param component
* @param names
* @throws EmptyRuntimeException
* {@link ExternalContext}がnullの場合
*/
protected void bindExternally(final BeanDesc beanDesc,
final ComponentDef componentDef, final Object component,
final Set names) throws EmptyRuntimeException {
final ExternalContext extCtx = componentDef.getContainer().getRoot()
.getExternalContext();
if (extCtx == null) {
throw new EmptyRuntimeException("externalContext");
}
for (int i = 0; i < beanDesc.getPropertyDescSize(); ++i) {
final PropertyDesc pd = beanDesc.getPropertyDesc(i);
if (!pd.isWritable()) {
continue;
}
final String name = pd.getPropertyName();
if (names.contains(name)) {
continue;
}
final Object value = getValue(name, pd.getPropertyType(), extCtx);
if (value == null) {
continue;
}
try {
pd.setValue(component, value);
names.add(name);
} catch (final IllegalPropertyRuntimeException ignore) {
}
}
}
/**
* {@link ExternalContext}から値を取り出します。
*
* @param name
* @param type
* @param extCtx
* @return 値
*/
protected Object getValue(final String name, final Class type,
final ExternalContext extCtx) {
if (type.isArray()) {
Object[] values = getValues(name, extCtx);
if (values != null) {
return values;
}
} else if (List.class.isAssignableFrom(type)) {
final Object[] values = getValues(name, extCtx);
if (values != null) {
return Arrays.asList(values);
}
}
return getValue(name, extCtx);
}
/**
* {@link ExternalContext}から値を取り出します。
*
* @param name
* @param extCtx
* @return 値
*/
protected Object getValue(final String name, final ExternalContext extCtx) {
Object value = extCtx.getRequestParameterMap().get(name);
if (value != null) {
return value;
}
value = extCtx.getRequestHeaderMap().get(name);
if (value != null) {
return value;
}
return extCtx.getRequestMap().get(name);
}
/**
* {@link ExternalContext}から配列の値を取り出します。
*
* @param name
* @param extCtx
* @return 配列の値
*/
protected Object[] getValues(final String name, final ExternalContext extCtx) {
Object[] values = (Object[]) extCtx.getRequestParameterValuesMap().get(
name);
if (values != null && values.length > 0) {
return values;
}
values = (Object[]) extCtx.getRequestHeaderValuesMap().get(name);
if (values != null && values.length > 0) {
return values;
}
return null;
}
}