Java Code Examples for org.apache.accumulo.core.data.Key#getColumnQualifierData()

public Attribute<?> getFieldValue(String fieldName, Key k) {
    ByteSequence sequence = k.getColumnQualifierData();
    int index = -1;
    for (int i = 0; i < sequence.length(); i++) {
        if (sequence.byteAt(i) == 0x00) {
            index = i;
            break;
        }
    }
    
    if (0 > index) {
        throw new IllegalArgumentException("Could not find null-byte contained in columnqualifier for key: " + k);
    }
    
    try {
        String data = Text.decode(sequence.getBackingArray(), index + 1, (sequence.length() - (index + 1))).intern();
        
        Attribute<?> attr = this.attrFactory.create(fieldName, data, k, attrFilter == null || attrFilter.keep(k));
        if (attrFilter != null) {
            attr.setToKeep(attrFilter.keep(k));
        }
        
        return attr;
    } catch (CharacterCodingException e) {
        throw new IllegalArgumentException(e);
    }
}
 

private static boolean datesMatch(Key reference, Key test) {
    ByteSequence a = reference.getColumnQualifierData(), b = test.getColumnQualifierData();
    for (int i = 0; i < 8; i++) {
        if (a.byteAt(i) != b.byteAt(i)) {
            return false;
        }
    }
    return true;
}
 

public String getFieldName(Key k) {
    
    int index = -1;
    
    ByteSequence sequence = k.getColumnQualifierData();
    
    byte[] arrayReference = sequence.getBackingArray();
    
    for (int i = 0; i < sequence.length(); i++) {
        if (!includeGroupingContext && arrayReference[i] == '.') {
            index = i;
            break;
        }
        if (arrayReference[i] == 0x00) {
            index = i;
            break;
        }
    }
    
    if (0 > index) {
        throw new IllegalArgumentException("Could not find null-byte contained in columnqualifier for key: " + k);
    }
    
    try {
        
        return Text.decode(arrayReference, 0, index);
    } catch (CharacterCodingException e) {
        throw new IllegalArgumentException(e);
    }
}
 

public static boolean sameShard(Key ref, Key test) {
    ByteSequence refCq = ref.getColumnQualifierData();
    ByteSequence testCq = test.getColumnQualifierData();
    if (testCq.length() < refCq.length()) {
        return false;
    }
    for (int i = 0; i < refCq.length(); ++i) {
        if (refCq.byteAt(i) != testCq.byteAt(i)) {
            return false;
        }
    }
    
    return testCq.byteAt(refCq.length()) == 0x00;
}
 

public static ByteSequence parseDataType(Key k) {
    ByteSequence cq = k.getColumnQualifierData();
    int i = cq.length();
    while (cq.byteAt(--i) != 0x00)
        ;
    return cq.subSequence(++i, cq.length());
}
 

public static boolean isFinalDocumentKey(Key k) {
    if (k != null && k.getColumnQualifierData() != null) {
        ByteSequence bytes = k.getColumnQualifierData();
        if (bytes.length() >= MARKER_TEXT.getLength()) {
            return (bytes.subSequence(bytes.length() - MARKER_TEXT.getLength(), bytes.length()).compareTo(MARKER_SEQUENCE) == 0);
        }
    }
    return false;
}
 

@Override
public boolean accept(Key key, Value value) {
    ByteSequence cq = key.getColumnQualifierData();
    if (cq.length() < cqSuffix.length) {
        return false;
    }
    int pos = cq.length() - 1;
    for (int i = cqSuffix.length - 1; i >= 0; i--) {
        if (cq.byteAt(pos--) != cqSuffix[i]) {
            return false;
        }
    }
    return true;
}
 

@Override
public void map(Key key, Value value, Context context)
    throws IOException, InterruptedException {
  temp.set(CF);
  ByteSequence cf = key.getColumnFamilyData();
  temp.append(cf.getBackingArray(), cf.offset(), cf.length());
  context.write(temp, EMPTY);

  temp.set(CQ);
  ByteSequence cq = key.getColumnQualifierData();
  temp.append(cq.getBackingArray(), cq.offset(), cq.length());
  context.write(temp, EMPTY);
}
 

private static RyaStatement createRyaStatement(final Key key, final Value value, final RyaTripleContext ryaTripleContext) throws TripleRowResolverException {
    final byte[] row = key.getRowData() != null  && key.getRowData().toArray().length > 0 ? key.getRowData().toArray() : null;
    final byte[] columnFamily = key.getColumnFamilyData() != null  && key.getColumnFamilyData().toArray().length > 0 ? key.getColumnFamilyData().toArray() : null;
    final byte[] columnQualifier = key.getColumnQualifierData() != null  && key.getColumnQualifierData().toArray().length > 0 ? key.getColumnQualifierData().toArray() : null;
    final Long timestamp = key.getTimestamp();
    final byte[] columnVisibility = key.getColumnVisibilityData() != null && key.getColumnVisibilityData().toArray().length > 0 ? key.getColumnVisibilityData().toArray() : null;
    final byte[] valueBytes = value != null && value.get().length > 0 ? value.get() : null;
    final TripleRow tripleRow = new TripleRow(row, columnFamily, columnQualifier, timestamp, columnVisibility, valueBytes);
    final RyaStatement ryaStatement = ryaTripleContext.deserializeTriple(TABLE_LAYOUT.SPO, tripleRow);

    return ryaStatement;
}
 

/**
 * Creates a {@link RyaStatement} from a {@link Key}/{@link Value} pair.
 * @param key the {@link Key}.
 * @param value the {@link Value}.
 * @param ryaTripleContext the {@link RyaTripleContext}.
 * @return the converted {@link RyaStatement}.
 * @throws TripleRowResolverException
 */
public static RyaStatement createRyaStatement(final Key key, final Value value, final RyaTripleContext ryaTripleContext) throws TripleRowResolverException {
    final byte[] row = key.getRowData() != null  && key.getRowData().toArray().length > 0 ? key.getRowData().toArray() : null;
    final byte[] columnFamily = key.getColumnFamilyData() != null  && key.getColumnFamilyData().toArray().length > 0 ? key.getColumnFamilyData().toArray() : null;
    final byte[] columnQualifier = key.getColumnQualifierData() != null  && key.getColumnQualifierData().toArray().length > 0 ? key.getColumnQualifierData().toArray() : null;
    final Long timestamp = key.getTimestamp();
    final byte[] columnVisibility = key.getColumnVisibilityData() != null && key.getColumnVisibilityData().toArray().length > 0 ? key.getColumnVisibilityData().toArray() : null;
    final byte[] valueBytes = value != null && value.get().length > 0 ? value.get() : null;
    final TripleRow tripleRow = new TripleRow(row, columnFamily, columnQualifier, timestamp, columnVisibility, valueBytes);
    final RyaStatement ryaStatement = ryaTripleContext.deserializeTriple(TABLE_LAYOUT.SPO, tripleRow);

    return ryaStatement;
}
 

public static String parseDataType(Key k) {
    ByteSequence colq = k.getColumnQualifierData();
    return new String(colq.subSequence(lastNull(colq) + 1, colq.length()).toArray());
}
 

public void set(Key key, Value value) {
    this.key = key;
    this.value = value;
    this.columnFamilyData = key.getColumnFamilyData();
    this.columnQualifierData = key.getColumnQualifierData();
}
 

/**
 * When skipKey is false, we produce the key based upon k, removing any data type
 * 
 * When skipKey is true, we will produce a key producing a skipkey from the root key. This will be helpful when we are being torn down.
 * 
 * @param k
 * @return
 */
public static Key makeRootKey(Key k) {
    ByteSequence cq = k.getColumnQualifierData();
    ByteSequence strippedCq = cq.subSequence(0, lastNull(cq));
    final ByteSequence row = k.getRowData(), cf = k.getColumnFamilyData(), cv = k.getColumnVisibilityData();
    return new Key(row.getBackingArray(), row.offset(), row.length(), cf.getBackingArray(), cf.offset(), cf.length(), strippedCq.getBackingArray(),
                    strippedCq.offset(), strippedCq.length(), cv.getBackingArray(), cv.offset(), cv.length(), k.getTimestamp());
}