org.hdiv.config.annotation.condition.OnFrameworkCondition.java Source code

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Here is the source code for org.hdiv.config.annotation.condition.OnFrameworkCondition.java

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/**
 * Copyright 2005-2013 hdiv.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.hdiv.config.annotation.condition;

import java.util.List;

import org.springframework.context.annotation.ConditionContext;
import org.springframework.context.annotation.ConfigurationCondition;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.util.Assert;
import org.springframework.util.ClassUtils;
import org.springframework.util.MultiValueMap;

/**
 * {@link ConfigurationCondition} for {@link ConditionalOnFramework} condition.
 * 
 * @since 2.1.7
 */
public class OnFrameworkCondition implements ConfigurationCondition {

    protected final boolean springMvcModulePresent = ClassUtils.isPresent(
            "org.hdiv.web.servlet.support.HdivRequestDataValueProcessor",
            OnFrameworkCondition.class.getClassLoader());

    protected final boolean grailsModulePresent = ClassUtils.isPresent(
            "org.hdiv.web.servlet.support.GrailsHdivRequestDataValueProcessor",
            OnFrameworkCondition.class.getClassLoader());

    protected final boolean grailsPresent = ClassUtils.isPresent(
            "org.codehaus.groovy.grails.web.servlet.GrailsDispatcherServlet",
            OnFrameworkCondition.class.getClassLoader());

    protected final boolean jsfPresent = ClassUtils.isPresent("javax.faces.webapp.FacesServlet",
            OnFrameworkCondition.class.getClassLoader());

    protected final boolean jsfModulePresent = ClassUtils.isPresent("org.hdiv.filter.JsfValidatorHelper",
            OnFrameworkCondition.class.getClassLoader());

    protected final boolean thymeleafModulePresent = ClassUtils.isPresent(
            "org.hdiv.web.servlet.support.ThymeleafHdivRequestDataValueProcessor",
            OnFrameworkCondition.class.getClassLoader());

    public ConfigurationPhase getConfigurationPhase() {
        return ConfigurationPhase.PARSE_CONFIGURATION;
    }

    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {

        MultiValueMap<String, Object> attributes = metadata
                .getAllAnnotationAttributes(ConditionalOnFramework.class.getName(), true);

        List<Object> values = attributes.get("value");
        Assert.notEmpty(values);
        SupportedFramework frwk = (SupportedFramework) values.get(0);

        if (frwk == SupportedFramework.SPRING_MVC) {
            return springMvcModulePresent;
        } else if (frwk == SupportedFramework.THYMELEAF) {
            return thymeleafModulePresent;
        } else if (frwk == SupportedFramework.GRAILS) {
            return grailsPresent && grailsModulePresent;
        } else if (frwk == SupportedFramework.JSF) {
            return jsfPresent && jsfModulePresent;
        } else {
            return false;
        }
    }

}