org.springframework.boot.autoconfigure.condition.OnWebApplicationCondition.java Source code

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Here is the source code for org.springframework.boot.autoconfigure.condition.OnWebApplicationCondition.java

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/*
 * Copyright 2012-2013 the original author or authors.
 *
 * 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.springframework.boot.autoconfigure.condition;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.context.annotation.Condition;
import org.springframework.context.annotation.ConditionContext;
import org.springframework.core.type.AnnotatedTypeMetadata;
import org.springframework.util.ClassUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.context.support.StandardServletEnvironment;

/**
 * {@link Condition} that checks for a web application context.
 * 
 * @author Dave Syer
 * @see ConditionalOnWebApplication
 */
class OnWebApplicationCondition implements Condition {

    private static Log logger = LogFactory.getLog(OnWebApplicationCondition.class);

    @Override
    public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {

        String checking = ConditionLogUtils.getPrefix(logger, metadata);

        if (!ClassUtils.isPresent("org.springframework.web.context.support.GenericWebApplicationContext", null)) {
            if (logger.isDebugEnabled()) {
                logger.debug(checking + "Web application classes not found");
            }
            return false;
        }
        boolean result = StringUtils.arrayToCommaDelimitedString(context.getBeanFactory().getRegisteredScopeNames())
                .contains("session") || context.getEnvironment() instanceof StandardServletEnvironment;
        if (logger.isDebugEnabled()) {
            logger.debug(checking + "Web application context found: " + result);
        }
        return result;
    }

    // FIXME merge with OnNotWeb...
}