/*
 * Copyright 2002-2008 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.config.java.plugin.tx;

import org.springframework.core.Conventions;
import org.springframework.core.JdkVersion;
import org.springframework.util.ClassUtils;

/**
 * TODO: JAVADOC
 * @author Rob Harrop
 * @author Juergen Hoeller
 * @since 2.0
 */
class TxNamespaceUtils {

    public static final String TRANSACTION_MANAGER_ATTRIBUTE = "transaction-manager";

    public static final String TRANSACTION_MANAGER_PROPERTY =
            Conventions.attributeNameToPropertyName(TRANSACTION_MANAGER_ATTRIBUTE);

    public static final String TRANSACTION_ATTRIBUTE_SOURCE = "transactionAttributeSource";

    private static final String ANNOTATION_TRANSACTION_ATTRIBUTE_SOURCE_CLASS_NAME =
            "org.springframework.transaction.annotation.AnnotationTransactionAttributeSource";


    public static Class<?> getAnnotationTransactionAttributeSourceClass() {
        if (JdkVersion.getMajorJavaVersion() < JdkVersion.JAVA_15) {
            throw new IllegalStateException(
                    "AnnotationTransactionAttributeSource is only available on Java 1.5 and higher");
        }
        try {
            return ClassUtils.forName(
                    ANNOTATION_TRANSACTION_ATTRIBUTE_SOURCE_CLASS_NAME, TxNamespaceUtils.class.getClassLoader());
        }
        catch (Throwable ex) {
            throw new IllegalStateException("Unable to load Java 1.5 dependent class [" +
                    ANNOTATION_TRANSACTION_ATTRIBUTE_SOURCE_CLASS_NAME + "]", ex);
        }
    }

}
