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Modern server-side Java template engine for both web and standalone environments
/*
* =============================================================================
*
* Copyright (c) 2011-2018, The THYMELEAF team (http://www.thymeleaf.org)
*
* 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.thymeleaf.context;
import java.util.Locale;
import java.util.Map;
import org.thymeleaf.IEngineConfiguration;
import org.thymeleaf.expression.ExpressionObjects;
import org.thymeleaf.expression.IExpressionObjects;
import org.thymeleaf.util.Validate;
/**
*
* Base abstract class implementing {@link IExpressionContext}.
*
*
* @author Daniel Fernández
* @since 3.0.0
*
*/
public abstract class AbstractExpressionContext extends AbstractContext implements IExpressionContext {
private final IEngineConfiguration configuration;
private IExpressionObjects expressionObjects = null;
protected AbstractExpressionContext(final IEngineConfiguration configuration) {
super();
Validate.notNull(configuration, "Configuration cannot be null");
this.configuration = configuration;
}
protected AbstractExpressionContext(final IEngineConfiguration configuration, final Locale locale) {
super(locale);
Validate.notNull(configuration, "Configuration cannot be null");
this.configuration = configuration;
}
protected AbstractExpressionContext(
final IEngineConfiguration configuration, final Locale locale, final Map variables) {
super(locale, variables);
Validate.notNull(configuration, "Configuration cannot be null");
this.configuration = configuration;
}
@Override
public final IEngineConfiguration getConfiguration() {
return this.configuration;
}
@Override
public IExpressionObjects getExpressionObjects() {
// We delay creation of expression objects in case they are not needed at all
if (this.expressionObjects == null) {
this.expressionObjects = new ExpressionObjects(this, this.configuration.getExpressionObjectFactory());
}
return this.expressionObjects;
}
}
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