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Mayaa is server side web template engine that is strongly aware of work sharing between programmers and designers based on HTML based templates.
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/*
* Copyright 2004-2012 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.mayaa.impl.cycle;
import java.util.Collections;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import org.apache.commons.collections.map.AbstractReferenceMap;
import org.apache.commons.collections.map.ReferenceMap;
import org.seasar.mayaa.cycle.ServiceCycle;
import org.seasar.mayaa.cycle.scope.AttributeScope;
import org.seasar.mayaa.cycle.script.CompiledScript;
import org.seasar.mayaa.cycle.script.ScriptEnvironment;
import org.seasar.mayaa.engine.processor.ProcessorTreeWalker;
import org.seasar.mayaa.engine.specification.NodeTreeWalker;
import org.seasar.mayaa.impl.CONST_IMPL;
import org.seasar.mayaa.impl.ParameterAwareImpl;
import org.seasar.mayaa.impl.cycle.scope.ScopeNotFoundException;
import org.seasar.mayaa.impl.cycle.script.rhino.PageAttributeScope;
import org.seasar.mayaa.impl.engine.EngineUtil;
import org.seasar.mayaa.impl.provider.ProviderUtil;
import org.seasar.mayaa.impl.source.ApplicationSourceDescriptor;
import org.seasar.mayaa.impl.source.SourceUtil;
import org.seasar.mayaa.impl.util.StringUtil;
import org.seasar.mayaa.source.SourceDescriptor;
/**
* @author Masataka Kurihara (Gluegent, Inc.)
*/
public abstract class AbstractServiceCycle
extends ParameterAwareImpl implements ServiceCycle, CONST_IMPL {
private static final long serialVersionUID = -4084527796306356704L;
@SuppressWarnings("unchecked")
private static final Map _scriptCache =
Collections.synchronizedMap(new ReferenceMap(AbstractReferenceMap.SOFT, AbstractReferenceMap.SOFT, true));
private AttributeScope _page;
private NodeTreeWalker _originalNode;
private NodeTreeWalker _injectedNode;
private ProcessorTreeWalker _processor;
private Throwable _t;
public void load(String systemID) {
load(systemID, SCRIPT_DEFAULT_CHARSET);
}
public void load(String systemID, String encoding) {
if (StringUtil.isEmpty(systemID)) {
throw new ScriptFileNotFoundException(systemID);
}
String sid = systemID;
if (sid.startsWith("/WEB-INF/")) {
sid = sid.substring(9);
} else if (StringUtil.isRelativePath(sid)) {
String sourcePath = EngineUtil.getSourcePath();
sid = StringUtil.adjustRelativePath(sourcePath, sid);
}
CompiledScript script = getScript(sid, encoding);
if (script == null) {
throw new ScriptFileNotFoundException(systemID);
}
script.execute(Void.class, null);
}
protected CompiledScript getScript(String systemID, String encoding) {
CompiledScript script = (CompiledScript) _scriptCache.get(systemID);
if (script != null) {
return script;
}
ApplicationSourceDescriptor appSource =
new ApplicationSourceDescriptor();
if (systemID.startsWith("/") == false) {
appSource.setRoot(ApplicationSourceDescriptor.WEB_INF);
}
appSource.setSystemID(systemID);
SourceDescriptor source;
if (appSource.exists()) {
source = appSource;
} else {
source = SourceUtil.getSourceDescriptor(systemID);
if (source.exists() == false) {
return null;
}
}
ScriptEnvironment env = ProviderUtil.getScriptEnvironment();
script = env.compile(source, encoding);
_scriptCache.put(systemID, script);
return script;
}
public Iterator iterateAttributeScope() {
Iterator it = ProviderUtil.getScriptEnvironment().iterateAttributeScope();
return new ScopeIterator(this, it);
}
private static String ATTRIBUTE_SCOPE_CACHE_KEY = "ATTRIBUTE_SCOPE_CACHE";
static {
CycleUtil.registVariableFactory(ATTRIBUTE_SCOPE_CACHE_KEY,
new DefaultCycleLocalInstantiator() {
public Object create(Object[] params) {
return new HashMap<>();
}
});
}
@SuppressWarnings("unchecked")
private Map getAttributeScopeCacheMap() {
return (Map) CycleUtil.getGlobalVariable(ATTRIBUTE_SCOPE_CACHE_KEY, null);
}
public AttributeScope findAttributeScope(String scopeName) {
boolean currentPageScope = false;
if (scopeName == null) {
currentPageScope = true;
scopeName = ServiceCycle.SCOPE_PAGE;
}
if (currentPageScope == false
&& getAttributeScopeCacheMap().containsKey(scopeName)) {
return (AttributeScope) getAttributeScopeCacheMap().get(scopeName);
}
for (Iterator it = iterateAttributeScope(); it.hasNext();) {
AttributeScope scope = it.next();
if (scope.getScopeName().equals(scopeName)) {
if (currentPageScope) {
scope =
(AttributeScope)scope.getAttribute(
PageAttributeScope.KEY_CURRENT);
return scope;
}
getAttributeScopeCacheMap().put(scopeName, scope);
return scope;
}
}
getAttributeScopeCacheMap().put(scopeName, null);
return null;
}
public boolean hasAttributeScope(String scopeName) {
if (StringUtil.isEmpty(scopeName)) {
//scopeName = ServiceCycle.SCOPE_PAGE;
scopeName = null;
}
return findAttributeScope(scopeName) != null;
}
public AttributeScope getAttributeScope(String scopeName) {
if (StringUtil.isEmpty(scopeName)) {
//scopeName = ServiceCycle.SCOPE_PAGE;
scopeName = null;
}
AttributeScope result = findAttributeScope(scopeName);
if (result == null) {
throw new ScopeNotFoundException(scopeName);
}
return result;
}
public void setPageScope(AttributeScope page) {
if (page == null) {
getAttributeScopeCacheMap().remove(ServiceCycle.SCOPE_PAGE);
} else {
getAttributeScopeCacheMap().put(ServiceCycle.SCOPE_PAGE, page);
}
_page = page;
}
public AttributeScope getPageScope() {
return _page;
}
public void setOriginalNode(NodeTreeWalker originalNode) {
_originalNode = originalNode;
}
public NodeTreeWalker getOriginalNode() {
return _originalNode;
}
public void setInjectedNode(NodeTreeWalker injectedNode) {
_injectedNode = injectedNode;
}
public NodeTreeWalker getInjectedNode() {
return _injectedNode;
}
public void setProcessor(ProcessorTreeWalker processor) {
_processor = processor;
}
public ProcessorTreeWalker getProcessor() {
return _processor;
}
public void setHandledError(Throwable t) {
_t = t;
}
public Throwable getHandledError() {
return _t;
}
}