Examples of org.kiji.schema.EntityId

org.kiji.schema.EntityId
EntityId is used to identify a particular row under the key format of a Kiji table. There are two name-spaces for rows:
- Kiji rows are logically indexed by Kiji row keys (arbitrary byte arrays or a list of key components).
- Under the hood, rows are indexed by HBase row keys (arbitrary byte arrays).
The translation between Kiji row keys and HBase row keys depends on the layout of the table the row belongs to. The same Kiji row key may translate to two different EntityIds on two different tables, based on their key format. For a representation of row keys which is agnostic to row key formats, see {@link KijiRowKeyComponents}. There are multiple translation schemes:
- Raw: Kiji row keys and HBase row keys are identical (identity translation), specifically used when the row key is an array of bytes.
- Hash: HBase row keys are MD5 hashes of the Kiji row key (non reversible transform).
- Hash-prefix: HBase row keys are Kiji row keys prefixed by a hash of the Kiji row key.
- Formatted: The user specifies the composition of the key. The key can be composed of one or more components of type string, number or a hash of one of the other components.

    final Kiji kiji = getKiji();
    kiji.createTable(KijiTableLayouts.getLayout(KijiTableLayouts.SIMPLE));


    final KijiTable table = kiji.openTable("table");
    try {
      final EntityId eid = table.getEntityId("eid");


      {
        final KijiTableWriter writer = table.openTableWriter();
        try {
          writer.put(eid, "family", "column", 1L, "me");

View Full Code Here

  public void testNoReaderSchema() throws Exception {
    final Kiji kiji = getKiji();
    kiji.createTable(KijiTableLayouts.getLayout(LAYOUT_DEVELOPER));
    final KijiTable table = kiji.openTable("dev");
    try {
      final EntityId eid = table.getEntityId("row");
      final KijiTableWriter writer = table.getWriterFactory().openTableWriter();
      try {
        // Registers writer schema 'long':
        writer.put(eid, "info", "user_id", (Long) 1L);

View Full Code Here

            .build()));


    kiji.createTable(desc);
    final KijiTable table = kiji.openTable("dev");
    try {
      final EntityId eid = table.getEntityId("row");
      final KijiTableWriter writer = table.getWriterFactory().openTableWriter();
      try {
        // Registering 'long' as a writer schema: compatible with 'long' reader schema:
        writer.put(eid, "info", "user_id", (Long) 1L);

View Full Code Here

            .build()));


    kiji.createTable(desc);
    final KijiTable table = kiji.openTable("dev");
    try {
      final EntityId eid = table.getEntityId("row");
      final KijiTableWriter writer = table.getWriterFactory().openTableWriter();
      try {
        // Register writer schema TestRecord1, compatible with reader TestRecord2:
        final GenericData.Record record1 = new GenericData.Record(INT_RECORD1);
        record1.put("integer", 314);

View Full Code Here

              table.getURI().toString() + "info:name,info:email"
          ));
      assertEquals(30, mToolOutputLines.length);


        EntityIdFactory eif = EntityIdFactory.getFactory(layout);
        EntityId startEid = eif.getEntityId("christophe@usermail.example.com"); //second row
        EntityId limitEid = eif.getEntityId("john.doe@gmail.com"); //second to last row
        String startHbaseRowKey = Hex.encodeHexString(startEid.getHBaseRowKey());
        String limitHbaseRowKey = Hex.encodeHexString(limitEid.getHBaseRowKey());
      assertEquals(BaseTool.SUCCESS, runTool(new ScanTool(),
          table.getURI().toString() + "info:name",
          "--start-row=hbase=hex:" + startHbaseRowKey,  // start at the second row.
          "--limit-row=hbase=hex:" + limitHbaseRowKey   // end at the 2nd to last row (exclusive).
      ));

View Full Code Here


  @Test
  public void testRawParserLoop() throws Exception {
    final EntityIdFactory factory =
      EntityIdFactory.getFactory((RowKeyFormat) mRawLayout.getDesc().getKeysFormat());
    final EntityId eid = factory.getEntityIdFromHBaseRowKey(Bytes.toBytes("rawRowKey"));


    assertEquals(eid,
        ToolUtils.createEntityIdFromUserInputs(eid.toShellString(), mRawLayout));
  }

View Full Code Here


  @Test
  public void testHashedParserLoop() throws Exception {
    final EntityIdFactory factory =
       EntityIdFactory.getFactory((RowKeyFormat) mHashedLayout.getDesc().getKeysFormat());
    final EntityId eid = factory.getEntityId("hashedRowKey");


    assertEquals(eid,
        ToolUtils.createEntityIdFromUserInputs(eid.toShellString(), mHashedLayout));
  }

View Full Code Here


  @Test
  public void testHashPrefixedParserLoop() throws Exception {
    final EntityIdFactory factory =
       EntityIdFactory.getFactory((RowKeyFormat) mHashPrefixedLayout.getDesc().getKeysFormat());
    final EntityId eid = factory.getEntityId("hashPrefixedRowKey");


    assertEquals(
        eid, ToolUtils.createEntityIdFromUserInputs(eid.toShellString(), mHashPrefixedLayout));
  }

View Full Code Here


  @Test
  public void testHBaseEIDtoRawEID() throws Exception {
    final EntityIdFactory factory =
      EntityIdFactory.getFactory((RowKeyFormat) mRawLayout.getDesc().getKeysFormat());
    final EntityId reid = factory.getEntityId("rawEID");
    final EntityId hbeid = HBaseEntityId.fromHBaseRowKey(reid.getHBaseRowKey());


    assertEquals(reid,
        ToolUtils.createEntityIdFromUserInputs(hbeid.toShellString(), mRawLayout));
  }

View Full Code Here


  @Test
  public void testHBaseEIDtoHashedEID() throws Exception {
    final EntityIdFactory factory =
      EntityIdFactory.getFactory((RowKeyFormat) mHashedLayout.getDesc().getKeysFormat());
    final EntityId heid = factory.getEntityId("hashedEID");
    final EntityId hbeid = HBaseEntityId.fromHBaseRowKey(heid.getHBaseRowKey());


    assertEquals(heid,
        ToolUtils.createEntityIdFromUserInputs(hbeid.toShellString(), mHashedLayout));


  }

View Full Code Here

0 1 2 3 4 5 6

TOP

Related Classes of org.kiji.schema.EntityId

$.DemoKiji

org.kiji.schema.cassandra.CassandraSimpleIntegrationTest

org.kiji.schema.cassandra.TestCassandraColumnReaderSpec

org.kiji.schema.cassandra.TestCassandraKijiBufferedWriter

org.kiji.schema.cassandra.TestCassandraKijiRowDataModifyLayout

org.kiji.schema.cassandra.TestCassandraReadAndWrite

org.kiji.schema.filter.TestCellByteSizeAsValueFilter

org.kiji.schema.filter.TestFormattedEntityIdRowFilter

org.kiji.schema.filter.TestKijiFirstKeyOnlyColumnFilter

org.kiji.schema.filter.TestStripValueRowFilter

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.