Examples of java.sql.Array

java.sql.Array
The mapping in the Java programming language for the SQL type ARRAY. By default, an Array value is a transaction-duration reference to an SQL ARRAY value. By default, an Array object is implemented using an SQL LOCATOR(array) internally, which means that an Array object contains a logical pointer to the data in the SQL ARRAY value rather than containing the ARRAY value's data.
The Array interface provides methods for bringing an SQL ARRAY value's data to the client as either an array or a ResultSet object. If the elements of the SQL ARRAY are a UDT, they may be custom mapped. To create a custom mapping, a programmer must do two things:
- create a class that implements the {@link SQLData}interface for the UDT to be custom mapped.
- make an entry in a type map that contains
  - the fully-qualified SQL type name of the UDT
  - the Class object for the class implementing SQLData
When a type map with an entry for the base type is supplied to the methods getArray and getResultSet, the mapping it contains will be used to map the elements of the ARRAY value. If no type map is supplied, which would typically be the case, the connection's type map is used by default. If the connection's type map or a type map supplied to a method has no entry for the base type, the elements are mapped according to the standard mapping.
All methods on the Array interface must be fully implemented if the JDBC driver supports the data type. @since 1.2

        props.setProperty(PhoenixRuntime.CURRENT_SCN_ATTRIB, Long.toString(ts + 30));
        conn = DriverManager.getConnection(getUrl(), props);
        stmt = conn.prepareStatement("UPSERT INTO t_same_size VALUES(?,?,?)");
        stmt.setString(1, "a");
        String[] s = new String[] {"abc","def", "ghi","jkl"};
        Array array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(2, array);
        s = new String[] {"abc","def", "ghi","jkl"};
        array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(3, array);
        stmt.execute();

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        props.setProperty(PhoenixRuntime.CURRENT_SCN_ATTRIB, Long.toString(ts + 30));
        conn = DriverManager.getConnection(getUrl(), props);
        stmt = conn.prepareStatement("UPSERT INTO t VALUES(?,?,?)");
        stmt.setString(1, "a");
        String[] s = new String[] { "abc", "def", "ghi", "jkll" };
        Array array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(2, array);
        s = new String[] { "abc", "def", "ghi", "jklm" };
        array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(3, array);
        stmt.execute();

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        props.setProperty(PhoenixRuntime.CURRENT_SCN_ATTRIB, Long.toString(ts + 30));
        conn = DriverManager.getConnection(getUrl(), props);
        stmt = conn.prepareStatement("UPSERT INTO t VALUES(?,?,?)");
        stmt.setString(1, "a");
        String[] s = new String[] { "abc", "def", "ghi", "jkll", null, null, "xxx" };
        Array array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(2, array);
        s = new String[] { "abc", "def", "ghi", "jkll", null, null, null, "xxx" };
        array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(3, array);
        stmt.execute();

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        props.setProperty(PhoenixRuntime.CURRENT_SCN_ATTRIB, Long.toString(ts + 30));
        conn = DriverManager.getConnection(getUrl(), props);
        stmt = conn.prepareStatement("UPSERT INTO t VALUES(?,?,?)");
        stmt.setString(1, "a");
        String[] s = new String[] { "abc", "def", "ghi", "jkll", null, null, "xxx" };
        Array array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(2, array);
        s = new String[] { "abc", "def", "ghi", "jkll", null, null, null, "xxx" };
        array = conn.createArrayOf("VARCHAR", s);
        stmt.setArray(3, array);
        stmt.execute();

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        Properties props = PropertiesUtil.deepCopy(TEST_PROPERTIES);
        props.setProperty(PhoenixRuntime.CURRENT_SCN_ATTRIB, Long.toString(ts + 10));
        conn = DriverManager.getConnection(getUrl(), props);
        try {
            PreparedStatement stmt = conn.prepareStatement("select ?[2] from system.\"catalog\" limit 1");
            Array array = conn.createArrayOf("CHAR", new String[] {"a","b","c"});
            stmt.setArray(1, array);
            ResultSet rs = stmt.executeQuery();
            assertTrue(rs.next());
            assertEquals("b", rs.getString(1));
            assertFalse(rs.next());

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            // Need to support primitive
            Double[] doubleArr =  new Double[2];
            doubleArr[0] = 64.87;
            doubleArr[1] = 89.96;
            //doubleArr[2] = 9.9;
            Array array = conn.createArrayOf("DOUBLE", doubleArr);
            stmt.setArray(4, array);
            
            // create character array
            String[] charArr =  new String[2];
            charArr[0] = "a";

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    public Array resultSet_getArray(ResultSetProxy resultSet, int columnIndex) throws SQLException {
        if (this.pos < filterSize) {
            return nextFilter().resultSet_getArray(this, resultSet, columnIndex);
        }


        Array rawArray = resultSet.getResultSetRaw().getArray(columnIndex);


        return rawArray;
    }

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    /**
     * @tests {@link javax.sql.rowset.serial.SQLInputImpl#readArray()}
     */
    public void testReadArray() throws SQLException {
        Array array = new MockArray();
        Object[] attributes = new Object[] { array };
        SQLInputImpl impl = new SQLInputImpl(attributes,
                new HashMap<String, Class<?>>());
        assertEquals(array, impl.readArray());

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  }


  protected Array createArray(Connection connection, String arrayName, Object value) throws SQLException {
    OracleArrayDescriptor arrayDescriptor;
    Struct[] structs;
    Array arrayValue;
    int size;


    if (value instanceof Collection<?> == false) {
      throw new UnsupportedOperationException("An array can only be created from a collection");
    }

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    return convertedValue;
  }


  public <T> Set<T> getArray(Connection connection, Object value, Class<T> targetClass) throws SQLException {
    Set<T> results = new LinkedHashSet<T>();
    Array arrayValue;
    ResultSet resultSet;


    if (value instanceof Array) {
      arrayValue = (Array) value;


      resultSet = arrayValue.getResultSet();
      while (resultSet.next()) {
        Object object = resultSet.getObject(1);
        object = resultSet.getObject(2);
        if (object instanceof Struct) {
          results.add(populateStruct(connection, (Struct) object, targetClass, arrayValue.getBaseTypeName()));
        }
      }
    }


    return results;

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