modules/core/src/main/java/org/apache/ignite/internal/processors/odbc/odbc/OdbcQuery.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.odbc;

import org.apache.ignite.internal.binary.BinaryReaderExImpl;
import org.apache.ignite.internal.binary.BinaryWriterExImpl;
import org.apache.ignite.internal.processors.odbc.SqlListenerUtils;
import org.apache.ignite.internal.util.typedef.internal.S;

/**
 * ODBC SQL query with parameters.
 */
public class OdbcQuery {
    /** Query SQL. */
    private String sql;

    /** Arguments. */
    private Object[] args;

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

    /**
     * @return Query SQL string.
     */
    public String sql() {
        return sql;
    }

    /**
     * @return Query arguments.
     */
    public Object[] args() {
        return args;
    }

    /**
     * Writes fields to provided writer.
     *
     * @param writer Binary object writer.
     */
    public void writeBinary(BinaryWriterExImpl writer) {
        writer.writeString(sql);

        if (args == null || args.length == 0)
            writer.writeInt(0);
        else {
            writer.writeInt(args.length);

            for (Object arg : args)
                SqlListenerUtils.writeObject(writer, arg, false);
        }
    }

    /**
     * Reads fields from provided reader.
     *
     * @param reader Binary object reader.
     */
    public void readBinary(BinaryReaderExImpl reader) {
        sql = reader.readString();

        int argsNum = reader.readInt();

        args = new Object[argsNum];

        for (int i = 0; i < argsNum; ++i)
            args[i] = SqlListenerUtils.readObject(reader, false);
    }

    /** {@inheritDoc} */
    @Override public String toString() {
        return S.toString(OdbcQuery.class, this);
    }
}