com.aspectran.core.context.rule.TemplateRule Maven / Gradle / Ivy
/*
* Copyright (c) 2008-2022 The Aspectran Project
*
* 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.aspectran.core.context.rule;
import com.aspectran.core.adapter.ApplicationAdapter;
import com.aspectran.core.context.expr.token.Token;
import com.aspectran.core.context.expr.token.Tokenizer;
import com.aspectran.core.context.rule.ability.BeanReferenceable;
import com.aspectran.core.context.rule.ability.Replicable;
import com.aspectran.core.context.rule.type.BeanRefererType;
import com.aspectran.core.context.rule.type.TextStyleType;
import com.aspectran.core.util.BooleanUtils;
import com.aspectran.core.util.ResourceUtils;
import com.aspectran.core.util.TextStyler;
import com.aspectran.core.util.ToStringBuilder;
import java.io.File;
import java.io.IOException;
import java.net.URL;
import java.util.List;
/**
* The Class TemplateRule.
*
* Created: 2008. 03. 22 PM 5:51:58
*/
public class TemplateRule implements Replicable, BeanReferenceable {
private static final String INTERNAL_TEMPLATE_ENGINE_NAME = "token";
private static final String NONE_TEMPLATE_ENGINE_NAME = "none";
private static final BeanRefererType BEAN_REFERER_TYPE = BeanRefererType.TEMPLATE_RULE;
private String id;
private String engine;
private String name;
private String file;
private String resource;
private String url;
private String encoding;
private TextStyleType contentStyle;
private String content;
private Boolean noCache;
private String engineBeanId;
private Class engineBeanClass;
private String templateSource;
private Token[] templateTokens;
private boolean tokenize;
private volatile long lastModifiedTime;
private volatile boolean loaded;
private boolean builtin;
public TemplateRule() {
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getEngine() {
return engine;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getFile() {
return file;
}
public void setFile(String file) {
this.file = file;
}
public String getResource() {
return resource;
}
public void setResource(String resource) {
this.resource = resource;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getEncoding() {
return encoding;
}
public void setEncoding(String encoding) {
this.encoding = encoding;
}
public TextStyleType getContentStyle() {
return contentStyle;
}
public String getContent() {
return content;
}
protected void setContentStyle(TextStyleType contentStyle) {
this.contentStyle = contentStyle;
}
protected void setContent(String content) {
this.content = content;
}
public Boolean getNoCache() {
return noCache;
}
public boolean isNoCache() {
return BooleanUtils.toBoolean(noCache);
}
public void setNoCache(Boolean noCache) {
this.noCache = noCache;
}
public boolean isBuiltin() {
return builtin;
}
public void setBuiltin(boolean builtin) {
this.builtin = builtin;
}
public boolean isOutsourcing() {
return (name != null && file == null && resource == null && url == null);
}
public String getEngineBeanId() {
return engineBeanId;
}
public void setEngineBeanId(String engineBeanId) {
this.engine = engineBeanId;
if (engineBeanId != null) {
switch (engineBeanId) {
case INTERNAL_TEMPLATE_ENGINE_NAME:
this.engineBeanId = null;
this.tokenize = true;
break;
case NONE_TEMPLATE_ENGINE_NAME:
this.engineBeanId = null;
this.tokenize = false;
break;
default:
this.engineBeanId = engineBeanId;
this.tokenize = false;
break;
}
} else {
this.engineBeanId = null;
this.tokenize = true;
}
}
public Class getEngineBeanClass() {
return engineBeanClass;
}
public void setEngineBeanClass(Class engineBeanClass) {
this.engineBeanClass = engineBeanClass;
}
public boolean isExternalEngine() {
return (this.engineBeanId != null);
}
public boolean isTokenize() {
return this.tokenize;
}
public String getTemplateSource() {
return templateSource;
}
public String getTemplateSource(ApplicationAdapter applicationAdapter) throws IOException {
if (this.file != null || this.resource != null || this.url != null) {
if (isNoCache()) {
return loadTemplateSource(applicationAdapter);
} else {
loadCachedTemplateSource(applicationAdapter);
return this.templateSource;
}
} else {
return this.templateSource;
}
}
public void setTemplateSource(String templateSource) {
this.templateSource = templateSource;
if (isTokenize()) {
this.templateTokens = parseContentTokens(templateSource);
}
}
protected void setTemplateSource(String templateSource, Token[] templateTokens) {
this.templateSource = templateSource;
this.templateTokens = templateTokens;
}
public Token[] getTemplateTokens() {
return this.templateTokens;
}
public Token[] getTemplateTokens(ApplicationAdapter applicationAdapter) throws IOException {
if (isExternalEngine()) {
throw new UnsupportedOperationException();
}
if (this.file != null || this.resource != null || this.url != null) {
if (isNoCache()) {
String source = loadTemplateSource(applicationAdapter);
return parseContentTokens(source);
} else {
loadCachedTemplateSource(applicationAdapter);
return this.templateTokens;
}
} else {
return this.templateTokens;
}
}
private Token[] parseContentTokens(String content) {
if (content == null || content.isEmpty()) {
return null;
}
List tokenList = Tokenizer.tokenize(content, false);
if (!tokenList.isEmpty()) {
return tokenList.toArray(new Token[0]);
} else {
return new Token[0];
}
}
private String loadTemplateSource(ApplicationAdapter applicationAdapter) throws IOException {
String templateSource = null;
if (this.file != null) {
File file = applicationAdapter.toRealPathAsFile(this.file);
templateSource = ResourceUtils.read(file, this.encoding);
} else if (this.resource != null) {
ClassLoader classLoader = applicationAdapter.getClassLoader();
URL url = classLoader.getResource(this.resource);
templateSource = ResourceUtils.read(url, this.encoding);
} else if (this.url != null) {
URL url = new URL(this.url);
templateSource = ResourceUtils.read(url, this.encoding);
}
return templateSource;
}
private void loadCachedTemplateSource(ApplicationAdapter applicationAdapter) throws IOException {
if (this.file != null) {
File file = applicationAdapter.toRealPathAsFile(this.file);
long time1 = this.lastModifiedTime;
long time2 = file.lastModified();
if (time2 > time1) {
synchronized (this) {
time1 = this.lastModifiedTime;
time2 = file.lastModified();
if (time2 > time1) {
String template = ResourceUtils.read(file, this.encoding);
setTemplateSource(template);
this.lastModifiedTime = time2;
}
}
}
} else if (this.resource != null) {
boolean loaded = this.loaded;
if (!loaded) {
synchronized (this) {
loaded = this.loaded;
if (!loaded) {
URL url = applicationAdapter.getClassLoader().getResource(this.resource);
String template = ResourceUtils.read(url, this.encoding);
setTemplateSource(template);
this.loaded = true;
}
}
}
} else if (this.url != null) {
boolean loaded = this.loaded;
if (!loaded) {
synchronized (this) {
loaded = this.loaded;
if (!loaded) {
URL url = new URL(this.url);
String template = ResourceUtils.read(url, this.encoding);
setTemplateSource(template);
this.loaded = true;
}
}
}
}
}
@Override
public TemplateRule replicate() {
return replicate(this);
}
@Override
public BeanRefererType getBeanRefererType() {
return BEAN_REFERER_TYPE;
}
@Override
public String toString() {
ToStringBuilder tsb = new ToStringBuilder();
if (!builtin) {
tsb.append("id", id);
}
tsb.append("engine", engine);
if (file != null) {
tsb.append("file", file);
} else if (resource != null) {
tsb.append("resource", resource);
} else if (url != null) {
tsb.append("url", url);
} else if (name != null) {
tsb.append("name", name);
} else {
tsb.appendSize("contentLength", content);
}
tsb.append("style", contentStyle);
tsb.append("encoding", encoding);
tsb.append("noCache", noCache);
return tsb.toString();
}
public static TemplateRule newInstance(String id, String engine, String name, String file,
String resource, String url, String content, String style, String encoding, Boolean noCache)
throws IllegalRuleException {
if (id == null) {
throw new IllegalRuleException("The 'template' element requires an 'id' attribute");
}
TextStyleType textStyleType = TextStyleType.resolve(style);
if (style != null && textStyleType == null) {
throw new IllegalRuleException("No text style type for '" + style + "'");
}
TemplateRule tr = new TemplateRule();
tr.setId(id);
tr.setEngineBeanId(engine);
tr.setName(name);
tr.setFile(file);
tr.setResource(resource);
tr.setUrl(url);
tr.setContent(content);
tr.setContentStyle(textStyleType);
tr.setEncoding(encoding);
tr.setNoCache(noCache);
updateTemplateSource(tr);
return tr;
}
public static TemplateRule newInstanceForBuiltin(String engine, String name, String file,
String resource, String url, String style, String content, String encoding, Boolean noCache)
throws IllegalRuleException {
TextStyleType textStyleType = TextStyleType.resolve(style);
if (style != null && textStyleType == null) {
throw new IllegalRuleException("No text style type for '" + style + "'");
}
TemplateRule tr = new TemplateRule();
tr.setEngineBeanId(engine);
tr.setName(name);
tr.setFile(file);
tr.setResource(resource);
tr.setUrl(url);
tr.setContent(content);
tr.setContentStyle(textStyleType);
tr.setEncoding(encoding);
tr.setNoCache(noCache);
tr.setBuiltin(true);
updateTemplateSource(tr);
return tr;
}
public static TemplateRule replicate(TemplateRule templateRule) {
TemplateRule tr = new TemplateRule();
tr.setId(templateRule.getId());
tr.setEngineBeanId(templateRule.getEngine());
tr.setEngineBeanClass(templateRule.getEngineBeanClass());
tr.setName(templateRule.getName());
tr.setFile(templateRule.getFile());
tr.setResource(templateRule.getResource());
tr.setUrl(templateRule.getUrl());
tr.setContent(templateRule.getContent());
tr.setContentStyle(templateRule.getContentStyle());
tr.setTemplateSource(templateRule.getTemplateSource(), templateRule.getTemplateTokens());
tr.setEncoding(templateRule.getEncoding());
tr.setNoCache(templateRule.getNoCache());
tr.setBuiltin(templateRule.isBuiltin());
return tr;
}
public static void updateTemplateSource(TemplateRule templateRule, String content) {
templateRule.setContent(content);
updateTemplateSource(templateRule);
}
private static void updateTemplateSource(TemplateRule templateRule) {
String content = templateRule.getContent();
if (content != null) {
content = TextStyler.styling(content, templateRule.getContentStyle());
templateRule.setTemplateSource(content);
}
}
}