org.pentaho.caching.spi.AbstractCacheProvidingService.java Source code

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/*! ******************************************************************************
 *
 * Pentaho Data Integration
 *
 * Copyright (C) 2002-2015 by Pentaho : http://www.pentaho.com
 *
 *******************************************************************************
 *
 * 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.pentaho.caching.spi;

import com.google.common.base.Enums;
import com.google.common.base.Optional;
import com.google.common.base.Preconditions;
import com.google.common.base.Strings;
import com.google.common.primitives.Longs;
import org.pentaho.caching.api.Constants.ExpiryFunction;
import org.pentaho.caching.api.PentahoCacheProvidingService;

import javax.cache.configuration.CompleteConfiguration;
import javax.cache.configuration.MutableConfiguration;
import java.util.Map;

import static org.pentaho.caching.api.Constants.*;

/**
 * @author nhudak
 */
public abstract class AbstractCacheProvidingService implements PentahoCacheProvidingService {
    @Override
    public <K, V> CompleteConfiguration<K, V> createConfiguration(Class<K> keyType, Class<V> valueType,
            Map<String, String> properties) {
        MutableConfiguration<K, V> configuration = new MutableConfiguration<K, V>();
        configuration.setTypes(keyType, valueType);

        if (properties.containsKey(CONFIG_TTL)) {
            Long ttl = Longs.tryParse(Strings.nullToEmpty(properties.get(CONFIG_TTL)));
            Preconditions.checkArgument(ttl != null, "Template config error", CONFIG_TTL);

            Optional<ExpiryFunction> expiryFunction;
            if (properties.containsKey(CONFIG_TTL_RESET)) {
                expiryFunction = Enums.getIfPresent(ExpiryFunction.class, properties.get(CONFIG_TTL_RESET));
            } else {
                expiryFunction = Optional.of(CONFIG_TTL_RESET_DEFAULT);
            }
            Preconditions.checkArgument(expiryFunction.isPresent(), "Template config error", CONFIG_TTL_RESET);

            configuration.setExpiryPolicyFactory(expiryFunction.get().createFactory(ttl));
        }
        if (properties.containsKey(CONFIG_STORE_BY_VALUE)) {
            configuration.setStoreByValue(Boolean.valueOf(properties.get(CONFIG_STORE_BY_VALUE)));
        }
        return configuration;
    }
}