modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/jdbc/JdbcPrimaryKeyMeta.java

/*
 * 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.ignite.internal.processors.odbc.jdbc;

import java.util.List;
import org.apache.ignite.binary.BinaryObjectException;
import org.apache.ignite.internal.binary.BinaryReaderExImpl;
import org.apache.ignite.internal.binary.BinaryWriterExImpl;
import org.apache.ignite.internal.processors.odbc.ClientListenerProtocolVersion;
import org.apache.ignite.internal.util.typedef.F;

/**
 * JDBC primary key metadata.
 */
public class JdbcPrimaryKeyMeta implements JdbcRawBinarylizable {
    /** Schema name. */
    private String schemaName;

    /** Table name. */
    private String tblName;

    /** Primary key name. */
    private String name;

    /** Primary key fields. */
    private List<String> fields;

    /**
     * Default constructor is used for binary serialization.
     */
    JdbcPrimaryKeyMeta() {
        // No-op.
    }

    /**
     * @param schemaName Schema.
     * @param tblName Table.
     * @param name Name.
     * @param fields Primary key fields.
     */
    JdbcPrimaryKeyMeta(String schemaName, String tblName, String name, List<String> fields) {
        this.schemaName = schemaName;
        this.tblName = tblName;
        this.name = name;
        this.fields = fields;
    }

    /**
     * @return Schema name.
     */
    public String schemaName() {
        return schemaName;
    }

    /**
     * @return Table name.
     */
    public String tableName() {
        return tblName;
    }

    /**
     * @return Primary key name.
     */
    public String name() {
        return name;
    }

    /**
     * @return Key fields.
     */
    public List<String> fields() {
        return fields;
    }


    /** {@inheritDoc} */
    @Override public void writeBinary(BinaryWriterExImpl writer,
        ClientListenerProtocolVersion ver) throws BinaryObjectException {
        writer.writeString(schemaName);
        writer.writeString(tblName);
        writer.writeString(name);

        JdbcUtils.writeStringCollection(writer, fields);
    }

    /** {@inheritDoc} */
    @Override public void readBinary(BinaryReaderExImpl reader,
        ClientListenerProtocolVersion ver) throws BinaryObjectException {
        schemaName = reader.readString();
        tblName = reader.readString();
        name = reader.readString();

        fields = JdbcUtils.readStringList(reader);
    }

    /** {@inheritDoc} */
    @Override public boolean equals(Object o) {
        if (this == o)
            return true;

        if (o == null || getClass() != o.getClass())
            return false;

        JdbcPrimaryKeyMeta meta = (JdbcPrimaryKeyMeta)o;

        return F.eq(schemaName, meta.schemaName) && F.eq(tblName, meta.tblName) && F.eq(name, meta.name);
    }

    /** {@inheritDoc} */
    @Override public int hashCode() {
        int result = schemaName != null ? schemaName.hashCode() : 0;

        result = 31 * result + tblName.hashCode();
        result = 31 * result + name.hashCode();

        return result;
    }
}