org.apache.drill.jdbc.ConnectionInfo.java Source code

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Here is the source code for org.apache.drill.jdbc.ConnectionInfo.java

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/**
 * 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.drill.jdbc;

import java.util.Map;
import java.util.Properties;

import com.google.common.base.Objects;
import com.google.common.base.Preconditions;
import com.google.common.collect.ImmutableMap;

/**
 * An immutable bag of parameters that describes a {@link java.sql.Connection}.
 */
public class ConnectionInfo {
    private final String url;
    private final Map<Object, Object> params;

    public ConnectionInfo(String url, Properties params) {
        this(url, ImmutableMap.copyOf(params));
    }

    public ConnectionInfo(String url, ImmutableMap<Object, Object> params) {
        this.url = Preconditions.checkNotNull(url, "URL cannot be null");
        this.params = params;
    }

    /**
     * Returns connection url.
     */
    public String getUrl() {
        return url;
    }

    /**
     * Returns connection parameters.
     */
    public Map<Object, Object> getParameters() {
        return params;
    }

    /**
     * Creates a new {@link java.util.Properties} instance from underlying parameters.
     */
    public Properties getParamsAsProperties() {
        final Properties props = new Properties();
        for (Object key : params.keySet()) {
            props.put(key, params.get(key));
        }
        return props;
    }

    @Override
    public int hashCode() {
        return Objects.hashCode(url, params);
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof ConnectionInfo) {
            final ConnectionInfo info = ConnectionInfo.class.cast(obj);
            return Objects.equal(url, info.getUrl()) && Objects.equal(params, info.getParameters());
        }
        return false;
    }
}