org.springframework.boot.autoconfigure.transaction.TransactionManagerCustomizers.java Source code

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Here is the source code for org.springframework.boot.autoconfigure.transaction.TransactionManagerCustomizers.java

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/*
 * Copyright 2012-2017 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.transaction;

import java.util.ArrayList;
import java.util.Collection;
import java.util.List;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import org.springframework.core.ResolvableType;
import org.springframework.transaction.PlatformTransactionManager;

/**
 * A collection of {@link PlatformTransactionManagerCustomizer}.
 *
 * @author Phillip Webb
 * @since 1.5.0
 */
public class TransactionManagerCustomizers {

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

    private final List<PlatformTransactionManagerCustomizer<?>> customizers;

    public TransactionManagerCustomizers(
            Collection<? extends PlatformTransactionManagerCustomizer<?>> customizers) {
        this.customizers = (customizers == null ? null : new ArrayList<>(customizers));
    }

    public void customize(PlatformTransactionManager transactionManager) {
        if (this.customizers != null) {
            for (PlatformTransactionManagerCustomizer<?> customizer : this.customizers) {
                Class<?> generic = ResolvableType
                        .forClass(PlatformTransactionManagerCustomizer.class, customizer.getClass())
                        .resolveGeneric();
                if (generic.isInstance(transactionManager)) {
                    customize(transactionManager, customizer);
                }
            }
        }
    }

    @SuppressWarnings({ "unchecked", "rawtypes" })
    private void customize(PlatformTransactionManager transactionManager,
            PlatformTransactionManagerCustomizer customizer) {
        try {
            customizer.customize(transactionManager);
        } catch (ClassCastException ex) {
            // Possibly a lambda-defined customizer which we could not resolve the generic
            // transaction manager type for
            if (logger.isDebugEnabled()) {
                logger.debug("Non-matching transaction manager type for customizer: " + customizer, ex);
            }
        }
    }

}