All Downloads are FREE. Search and download functionalities are using the official Maven repository.

org.thymeleaf.spring5.expression.SpringStandardExpressions Maven / Gradle / Ivy

Go to download

Modern server-side Java template engine for both web and standalone environments

There is a newer version: 3.1.2.RELEASE
Show newest version
/*
 * =============================================================================
 *
 *   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.spring5.expression;

import org.thymeleaf.IEngineConfiguration;
import org.thymeleaf.exceptions.TemplateProcessingException;
import org.thymeleaf.spring5.dialect.SpringStandardDialect;


/**
 * 

* Utility class for the easy obtention of objects relevant to the parsing and execution of Thymeleaf * Spring-Standard Expressions (Thymeleaf Standard Expressions based using Spring EL as a base expression language). *

* * @author Daniel Fernández * * @since 3.0.3 * */ public final class SpringStandardExpressions { /** * Name used for registering whether Spring EL compilation should be enabled if available or not. */ public static final String ENABLE_SPRING_EL_COMPILER_ATTRIBUTE_NAME = "EnableSpringELCompiler"; private SpringStandardExpressions() { super(); } /** *

* Check whether compilation of Spring EL expressions should be enabled or not. *

*

* This is done through configuration methods at the {@link SpringStandardDialect} * instance being used, and its value is offered to the engine as an execution attribute. *

* * @param configuration the configuration object for the current template execution environment. * @return {@code true} if the SpEL compiler should be enabled if available, {@code false} if not. */ public static boolean isSpringELCompilerEnabled(final IEngineConfiguration configuration) { final Object enableSpringELCompiler = configuration.getExecutionAttributes().get(ENABLE_SPRING_EL_COMPILER_ATTRIBUTE_NAME); if (enableSpringELCompiler == null) { return false; } if (!(enableSpringELCompiler instanceof Boolean)) { throw new TemplateProcessingException( "A value for the \"" + ENABLE_SPRING_EL_COMPILER_ATTRIBUTE_NAME + "\" execution attribute " + "has been specified, but it is not of the required type Boolean. " + "(" + enableSpringELCompiler.getClass().getName() + ")"); } return ((Boolean) enableSpringELCompiler).booleanValue(); } }




© 2015 - 2024 Weber Informatics LLC | Privacy Policy