Examples with FieldPacket io.mycat.net.mysql.FieldPacket used on opensource projects

Example 86 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class MysqlInformationSchemaHandler method queryEngines.

/**
 * @param c
 * @param charset
 */
private static void queryEngines(ServerConnection c, String charset) {
    int field_count = 6;
    FieldPacket[] fields = new FieldPacket[field_count];
    fields[0] = PacketUtil.getField("ENGINE", Fields.FIELD_TYPE_VAR_STRING);
    fields[1] = PacketUtil.getField("SUPPORT", Fields.FIELD_TYPE_VAR_STRING);
    fields[2] = PacketUtil.getField("COMMENT", Fields.FIELD_TYPE_VAR_STRING);
    fields[3] = PacketUtil.getField("TRANSITIONS", Fields.FIELD_TYPE_VAR_STRING);
    fields[4] = PacketUtil.getField("XA", Fields.FIELD_TYPE_VAR_STRING);
    fields[5] = PacketUtil.getField("SAVEPOINTS", Fields.FIELD_TYPE_VAR_STRING);
    RowDataPacket[] rows = new RowDataPacket[1];
    RowDataPacket row = new RowDataPacket(field_count);
    row.add(StringUtil.encode("InnoDB", charset));
    row.add(StringUtil.encode("default ", charset));
    row.add(StringUtil.encode("Supports transactions, row-level locking, and foreign keys ", charset));
    row.add(StringUtil.encode("YES ", charset));
    row.add(StringUtil.encode("YES ", charset));
    row.add(StringUtil.encode("YES", charset));
    rows[0] = row;
    Result rs = new Result();
    rs.fields = fields;
    rs.rows = rows;
    doWrite(rs, c);
}

Example 87 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class MysqlInformationSchemaHandler method doWrite.

private static void doWrite(Result rs, ServerConnection c) {
    ByteBuffer buffer = c.allocate();
    // write header
    ResultSetHeaderPacket header = PacketUtil.getHeader(rs.fields.length);
    byte packetId = header.packetId;
    buffer = header.write(buffer, c, true);
    // write fields
    for (FieldPacket field : rs.fields) {
        field.packetId = ++packetId;
        buffer = field.write(buffer, c, true);
    }
    // write eof
    EOFPacket eof = new EOFPacket();
    eof.packetId = ++packetId;
    buffer = eof.write(buffer, c, true);
    // write rows
    for (RowDataPacket row : rs.rows) {
        row.packetId = ++packetId;
        buffer = row.write(buffer, c, true);
    }
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}

Example 88 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class MysqlInformationSchemaHandler method querySchema.

/**
 * @param c
 * @param charset
 */
private static void querySchema(ServerConnection c, String charset) {
    int field_count = 5;
    FieldPacket[] fields = new FieldPacket[field_count];
    fields[0] = PacketUtil.getField("CATALOG_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[1] = PacketUtil.getField("SCHEMA_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[2] = PacketUtil.getField("DEFAULT_CHARACTER_SET_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[3] = PacketUtil.getField("DEFAULT_COLLATION_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[4] = PacketUtil.getField("SQL_PATH", Fields.FIELD_TYPE_VAR_STRING);
    Map<String, SchemaConfig> schemas = MycatServer.getInstance().getConfig().getSchemas();
    RowDataPacket[] rows = new RowDataPacket[schemas.size()];
    int i = 0;
    for (Entry<String, SchemaConfig> sc : schemas.entrySet()) {
        RowDataPacket row = new RowDataPacket(field_count);
        row.add(StringUtil.encode("def", charset));
        row.add(StringUtil.encode("utf-8", charset));
        row.add(StringUtil.encode(sc.getKey(), charset));
        row.add(StringUtil.encode("utf8_general_ci", charset));
        row.add(StringUtil.encode("", charset));
        rows[i++] = row;
    }
    Result rs = new Result();
    rs.fields = fields;
    rs.rows = rows;
    doWrite(rs, c);
}

Example 89 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class MysqlInformationSchemaHandler method queryCharacterSets.

/**
 * @param c
 * @param charset
 */
private static void queryCharacterSets(ServerConnection c, String charset) {
    int field_count = 4;
    FieldPacket[] fields = new FieldPacket[field_count];
    fields[0] = PacketUtil.getField("CHARACTER_SET_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[1] = PacketUtil.getField("DEFAULT_COLLATE_NAME", Fields.FIELD_TYPE_VAR_STRING);
    fields[2] = PacketUtil.getField("DESCRIPTION", Fields.FIELD_TYPE_VAR_STRING);
    fields[3] = PacketUtil.getField("MAXLEN", Fields.FIELD_TYPE_LONG);
    RowDataPacket[] rows = new RowDataPacket[1];
    RowDataPacket row = new RowDataPacket(field_count);
    row.add(StringUtil.encode("big5", charset));
    row.add(StringUtil.encode("big5_chinese_ci", charset));
    row.add(StringUtil.encode("Big5 Traditional Chinese", charset));
    row.add(LongUtil.toBytes(2));
    rows[0] = row;
    Result rs = new Result();
    rs.fields = fields;
    rs.rows = rows;
    doWrite(rs, c);
}

Example 90 with FieldPacket

use of io.mycat.net.mysql.FieldPacket in project Mycat_plus by coderczp.

the class Explain2Handler method showerror.

private static void showerror(String stmt, ServerConnection c, String msg) {
    ByteBuffer buffer = c.allocate();
    // write header
    ResultSetHeaderPacket header = PacketUtil.getHeader(FIELD_COUNT);
    byte packetId = header.packetId;
    buffer = header.write(buffer, c, true);
    // write fields
    for (FieldPacket field : fields) {
        field.packetId = ++packetId;
        buffer = field.write(buffer, c, true);
    }
    // write eof
    EOFPacket eof = new EOFPacket();
    eof.packetId = ++packetId;
    buffer = eof.write(buffer, c, true);
    RowDataPacket row = new RowDataPacket(FIELD_COUNT);
    row.add(StringUtil.encode(stmt, c.getCharset()));
    row.add(StringUtil.encode(msg, c.getCharset()));
    row.packetId = ++packetId;
    buffer = row.write(buffer, c, true);
    // write last eof
    EOFPacket lastEof = new EOFPacket();
    lastEof.packetId = ++packetId;
    buffer = lastEof.write(buffer, c, true);
    // post write
    c.write(buffer);
}