private static ByteBuffer toByteBuffer(Object obj) { byte[] raw = null; if ( obj == null ) { return null; } if ( ( obj instanceof byte[] ) ) { raw = (byte[]) obj; } else if ( obj instanceof Blob ) { raw = toByteArray( (Blob) obj ); } else { throw new IllegalArgumentException( "Expected byte array or BLOB" ); } ByteBuffer buffer = ByteBuffer.from( raw ); buffer.setByteOrder( ByteOrder.valueOf( raw[0] ) ); return buffer; }
private static ByteBuffer addCrsId(byte[] wkb, byte orderByte, int typeCode, int crsId) { ByteBuffer buffer = ByteBuffer.allocate( wkb.length + 4 ); // original capacity + 4 bytes for the CRS ID buffer.setByteOrder( ByteOrder.valueOf( orderByte ) ); buffer.put( orderByte ); // write byte order buffer.putUInt( typeCode | POSTGIS_SRID_FLAG ); // set SRID flag buffer.putInt( crsId ); // write CRS ID // write remaining data for ( int i = 5; i < wkb.length; i++ ) { buffer.put( wkb[i] ); } buffer.rewind(); return buffer; }
/** * Gets the byte order of this instance. * * @return This buffer's byte order */ public ByteOrder getByteOrder() { java.nio.ByteOrder order = buffer.order(); return ByteOrder.valueOf(order); }
private void alignByteOrder(ByteBuffer byteBuffer) { byte orderByte = byteBuffer.get(); ByteOrder byteOrder = ByteOrder.valueOf(orderByte); byteBuffer.setByteOrder(byteOrder); } }