示例#1
0
 @Override
 public List<Mutation>
     toRowMutations() { // TODO: change to List<Mutation> once it implements Row
   List<Mutation> mutations = new ArrayList<Mutation>(3);
   if (deleteRow != null) {
     // Include only deleteRow mutation if present because it takes precedence over all others
     mutations.add(deleteRow);
   } else {
     // Because we cannot enforce a not null constraint on a KV column (since we don't know if
     // the row exists when
     // we upsert it), se instead add a KV that is always emtpy. This allows us to imitate SQL
     // semantics given the
     // way HBase works.
     setValues.add(
         SchemaUtil.getEmptyColumnFamily(getColumnFamilies()),
         QueryConstants.EMPTY_COLUMN_BYTES,
         ts,
         ByteUtil.EMPTY_BYTE_ARRAY);
     mutations.add(setValues);
     if (!unsetValues.isEmpty()) {
       mutations.add(unsetValues);
     }
   }
   return mutations;
 }
示例#2
0
 @Override
 public int newKey(ImmutableBytesWritable key, byte[][] values) {
   int i = 0;
   TrustedByteArrayOutputStream os =
       new TrustedByteArrayOutputStream(SchemaUtil.estimateKeyLength(this));
   try {
     List<PColumn> columns = getPKColumns();
     int nColumns = columns.size();
     PColumn lastPKColumn = columns.get(nColumns - 1);
     while (i < values.length && i < nColumns) {
       PColumn column = columns.get(i);
       PDataType type = column.getDataType();
       // This will throw if the value is null and the type doesn't allow null
       byte[] byteValue = values[i++];
       if (byteValue == null) {
         byteValue = ByteUtil.EMPTY_BYTE_ARRAY;
       }
       // An empty byte array return value means null. Do this,
       // since a type may have muliple representations of null.
       // For example, VARCHAR treats both null and an empty string
       // as null. This way we don't need to leak that part of the
       // implementation outside of PDataType by checking the value
       // here.
       if (byteValue.length == 0 && !column.isNullable()) {
         throw new ConstraintViolationException(
             name.getString() + "." + column.getName().getString() + " may not be null");
       }
       Integer byteSize = column.getByteSize();
       if (type.isFixedWidth()) { // TODO: handle multi-byte characters
         if (byteValue.length != byteSize) {
           throw new ConstraintViolationException(
               name.getString()
                   + "."
                   + column.getName().getString()
                   + " must be "
                   + byteSize
                   + " bytes ("
                   + SchemaUtil.toString(type, byteValue)
                   + ")");
         }
       } else if (byteSize != null && byteValue.length > byteSize) {
         throw new ConstraintViolationException(
             name.getString()
                 + "."
                 + column.getName().getString()
                 + " may not exceed "
                 + byteSize
                 + " bytes ("
                 + SchemaUtil.toString(type, byteValue)
                 + ")");
       }
       os.write(byteValue, 0, byteValue.length);
       // Separate variable length column values in key with zero byte
       if (!type.isFixedWidth() && column != lastPKColumn) {
         os.write(SEPARATOR_BYTE);
       }
     }
     // If some non null pk values aren't set, then throw
     if (i < nColumns) {
       PColumn column = columns.get(i);
       PDataType type = column.getDataType();
       if (type.isFixedWidth() || !column.isNullable()) {
         throw new ConstraintViolationException(
             name.getString() + "." + column.getName().getString() + " may not be null");
       }
       // Separate variable length column values in key with zero byte
       if (column != lastPKColumn) {
         os.write(SEPARATOR_BYTE);
       }
     }
     key.set(os.getBuffer(), 0, os.size());
     return i;
   } finally {
     try {
       os.close();
     } catch (IOException e) {
       throw new RuntimeException(e); // Impossible
     }
   }
 }