Package org.apache.activemq.store.amq

Source Code of org.apache.activemq.store.amq.RecoveryListenerAdapter

/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements.  See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.apache.activemq.store.amq;

import org.apache.activemq.command.Message;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.store.MessageRecoveryListener;
import org.apache.activemq.store.MessageStore;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

final class RecoveryListenerAdapter implements MessageRecoveryListener {

    private static final Log LOG = LogFactory.getLog(RecoveryListenerAdapter.class);
    private final MessageStore store;
    private final MessageRecoveryListener listener;
    private int count;
    private MessageId lastRecovered;

    RecoveryListenerAdapter(MessageStore store, MessageRecoveryListener listener) {
        this.store = store;
        this.listener = listener;
    }

    public boolean hasSpace() {
        return listener.hasSpace();
    }

    public boolean recoverMessage(Message message) throws Exception {
        if (listener.hasSpace()) {
            listener.recoverMessage(message);
            lastRecovered = message.getMessageId();
            count++;
            return true;
        }
        return false;
    }

    public boolean recoverMessageReference(MessageId ref) throws Exception {
        Message message = this.store.getMessage(ref);
        if (message != null) {
            return recoverMessage(message);
        } else {
            LOG.error("Message id " + ref + " could not be recovered from the data store!");
        }
        return false;
    }

    MessageId getLastRecoveredMessageId() {
        return lastRecovered;
    }

    int size() {
        return count;
    }

    void reset() {
        count = 0;
    }
}
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