private String comparatorForSerializer(Serializer<?> s) {
String comparator = serializerToComparatorMapping.get(s.getClass());
if (comparator != null) {
return comparator;
}
return BYTESTYPE.getTypeName();
}
@SuppressWarnings("unchecked")
public ByteBuffer serialize() {
if (serialized != null) {
return serialized.duplicate();
}
ByteBufferOutputStream out = new ByteBufferOutputStream();
int i = 0;
for (Component c : components) {
Serializer<?> s = serializerForPosition(i);
ByteBuffer cb = c.getBytes(s);
if (cb == null) {
cb = ByteBuffer.allocate(0);
}
if (dynamic) {
String comparator = comparatorForPosition(i);
if (comparator == null) {
comparator = c.getComparator();
}
if (comparator == null) {
comparator = BYTESTYPE.getTypeName();
}
int p = comparator.indexOf("(reversed=true)");
boolean desc = false;
if (p >= 0) {
comparator = comparator.substring(0, p);
desc = true;
}
if (aliasToComparatorMapping.inverse().containsKey(comparator)) {
byte a = aliasToComparatorMapping.inverse().get(comparator);
if (desc) {
a = (byte) Character.toUpperCase((char) a);
}
out.writeShort((short) (0x8000 | a));
} else {
out.writeShort((short) comparator.length());
out.write(comparator.getBytes(Charsets.UTF_8));
}
// if (comparator.equals(BYTESTYPE.getTypeName()) && (cb.remaining() ==
// 0)) {
// log.warn("Writing zero-length BytesType, probably an error");
// }
}
out.writeShort((short) cb.remaining());
out.write(cb.slice());
if ((i == (components.size() - 1)) && (equality != ComponentEquality.EQUAL)) {
out.write(equality.toByte());
} else {
out.write(c.getEquality().toByte());
}
i++;
}
serialized = out.getByteBuffer();
return serialized.duplicate();
}
private String getComparator(int i, ByteBuffer bb) {
String name = comparatorForPosition(i);
if (name != null) {
return name;
}
if (!dynamic) {
if (bb.hasRemaining()) {
return BYTESTYPE.getTypeName();
} else {
return null;
}
}
if (bb.hasRemaining()) {
try {
int header = getShortLength(bb);
if ((header & 0x8000) == 0) {
name = Charsets.UTF_8.newDecoder().decode(getBytes(bb, header).duplicate()).toString();
} else {
byte a = (byte) (header & 0xFF);
name = aliasToComparatorMapping.get(a);
if (name == null) {
a = (byte) Character.toLowerCase((char) a);
name = aliasToComparatorMapping.get(a);
if (name != null) {
name += "(reversed=true)";
}
}
}
} catch (CharacterCodingException e) {
throw new RuntimeException(e);
}
}
if ((name != null) && (name.length() == 0)) {
name = null;
}
return name;
}
/**
* Parent class of Composite and DynamicComposite. Acts as a list of objects that get serialized
* into a composite column name. Unless setAutoDeserialize(true) is called, it's going to try to
* match serializers to Cassandra comparator types.
*
* @author edanuff
*/
@SuppressWarnings("rawtypes")
public abstract class AbstractComposite extends AbstractList<Object>
implements Comparable<AbstractComposite> {
public static Logger log = LoggerFactory.getLogger(AbstractComposite.class);
public enum ComponentEquality {
LESS_THAN_EQUAL((byte) -1),
EQUAL((byte) 0),
GREATER_THAN_EQUAL((byte) 1);
private final byte equality;
ComponentEquality(byte equality) {
this.equality = equality;
}
public byte toByte() {
return equality;
}
public static ComponentEquality fromByte(byte equality) {
if (equality > 0) {
return GREATER_THAN_EQUAL;
}
if (equality < 0) {
return LESS_THAN_EQUAL;
}
return EQUAL;
}
}
public static final BiMap<Class<? extends Serializer>, String>
DEFAULT_SERIALIZER_TO_COMPARATOR_MAPPING =
new ImmutableBiMap.Builder<Class<? extends Serializer>, String>()
.put(AsciiSerializer.class, AsciiSerializer.get().getComparatorType().getTypeName())
.put(
BigIntegerSerializer.class,
BigIntegerSerializer.get().getComparatorType().getTypeName())
.put(
ByteBufferSerializer.class,
ByteBufferSerializer.get().getComparatorType().getTypeName())
.put(LongSerializer.class, LongSerializer.get().getComparatorType().getTypeName())
.put(StringSerializer.class, StringSerializer.get().getComparatorType().getTypeName())
.put(FloatSerializer.class, FloatSerializer.get().getComparatorType().getTypeName())
.put(UUIDSerializer.class, UUIDSerializer.get().getComparatorType().getTypeName())
.build();
static final ImmutableClassToInstanceMap<Serializer> SERIALIZERS =
new ImmutableClassToInstanceMap.Builder<Serializer>()
.put(AsciiSerializer.class, AsciiSerializer.get())
.put(BigIntegerSerializer.class, BigIntegerSerializer.get())
.put(ByteBufferSerializer.class, ByteBufferSerializer.get())
.put(FloatSerializer.class, FloatSerializer.get())
.put(LongSerializer.class, LongSerializer.get())
.put(StringSerializer.class, StringSerializer.get())
.put(UUIDSerializer.class, UUIDSerializer.get())
.build();
public static final BiMap<Byte, String> DEFAULT_ALIAS_TO_COMPARATOR_MAPPING =
new ImmutableBiMap.Builder<Byte, String>()
.put((byte) 'a', ASCIITYPE.getTypeName())
.put((byte) 'b', BYTESTYPE.getTypeName())
.put((byte) 'f', FLOATTYPE.getTypeName())
.put((byte) 'i', INTEGERTYPE.getTypeName())
.put((byte) 'x', LEXICALUUIDTYPE.getTypeName())
.put((byte) 'l', LONGTYPE.getTypeName())
.put((byte) 't', TIMEUUIDTYPE.getTypeName())
.put((byte) 's', UTF8TYPE.getTypeName())
.put((byte) 'u', UUIDTYPE.getTypeName())
.build();
BiMap<Class<? extends Serializer>, String> serializerToComparatorMapping =
DEFAULT_SERIALIZER_TO_COMPARATOR_MAPPING;
BiMap<Byte, String> aliasToComparatorMapping = DEFAULT_ALIAS_TO_COMPARATOR_MAPPING;
final boolean dynamic;
List<Serializer<?>> serializersByPosition = null;
List<String> comparatorsByPosition = null;
public class Component<T> {
final Serializer<T> serializer;
final T value;
final ByteBuffer bytes;
final String comparator;
final ComponentEquality equality;
public Component(
T value,
ByteBuffer bytes,
Serializer<T> serializer,
String comparator,
ComponentEquality equality) {
this.serializer = serializer;
this.value = value;
this.bytes = bytes;
this.comparator = comparator;
this.equality = equality;
}
public Serializer<T> getSerializer() {
return serializer;
}
@SuppressWarnings("unchecked")
public <A> A getValue(Serializer<A> s) {
if (s == null) {
s = (Serializer<A>) serializer;
}
if ((value == null) && (bytes != null) && (s != null)) {
ByteBuffer cb = bytes.duplicate();
return s.fromByteBuffer(cb);
}
if (value instanceof ByteBuffer) {
return (A) ((ByteBuffer) value).duplicate();
}
return (A) value;
}
public T getValue() {
return getValue(serializer);
}
@SuppressWarnings("unchecked")
public <A> ByteBuffer getBytes(Serializer<A> s) {
if (bytes == null) {
if (value instanceof ByteBuffer) {
return ((ByteBuffer) value).duplicate();
}
if (value == null) {
return null;
}
if (s == null) {
s = (Serializer<A>) serializer;
}
if (s != null) {
return s.toByteBuffer((A) value).duplicate();
}
}
return bytes.duplicate();
}
public ByteBuffer getBytes() {
return getBytes(serializer);
}
public String getComparator() {
return comparator;
}
public ComponentEquality getEquality() {
return equality;
}
@Override
public String toString() {
return "Component [" + getValue() + "]";
}
}
List<Component<?>> components = new ArrayList<Component<?>>();
ComponentEquality equality = ComponentEquality.EQUAL;
ByteBuffer serialized = null;
public AbstractComposite(boolean dynamic) {
this.dynamic = dynamic;
}
public AbstractComposite(boolean dynamic, Object... o) {
this.dynamic = dynamic;
this.addAll(Arrays.asList(o));
}
public AbstractComposite(boolean dynamic, List<?> l) {
this.dynamic = dynamic;
this.addAll(l);
}
public List<Component<?>> getComponents() {
return components;
}
public void setComponents(List<Component<?>> components) {
serialized = null;
this.components = components;
}
public Map<Class<? extends Serializer>, String> getSerializerToComparatorMapping() {
return serializerToComparatorMapping;
}
public void setSerializerToComparatorMapping(
Map<Class<? extends Serializer>, String> serializerToComparatorMapping) {
serialized = null;
this.serializerToComparatorMapping =
new ImmutableBiMap.Builder<Class<? extends Serializer>, String>()
.putAll(serializerToComparatorMapping)
.build();
}
public Map<Byte, String> getAliasesToComparatorMapping() {
return aliasToComparatorMapping;
}
public void setAliasesToComparatorMapping(Map<Byte, String> aliasesToComparatorMapping) {
serialized = null;
aliasToComparatorMapping =
new ImmutableBiMap.Builder<Byte, String>().putAll(aliasesToComparatorMapping).build();
}
public boolean isDynamic() {
return dynamic;
}
public List<Serializer<?>> getSerializersByPosition() {
return serializersByPosition;
}
public void setSerializersByPosition(List<Serializer<?>> serializersByPosition) {
this.serializersByPosition = serializersByPosition;
}
public void setSerializersByPosition(Serializer<?>... serializers) {
serializersByPosition = Arrays.asList(serializers);
}
public void setSerializerByPosition(int index, Serializer<?> s) {
if (serializersByPosition == null) {
serializersByPosition = new ArrayList<Serializer<?>>();
}
while (serializersByPosition.size() <= index) {
serializersByPosition.add(null);
}
serializersByPosition.set(index, s);
}
public List<String> getComparatorsByPosition() {
return comparatorsByPosition;
}
public void setComparatorsByPosition(List<String> comparatorsByPosition) {
this.comparatorsByPosition = comparatorsByPosition;
}
public void setComparatorsByPosition(String... comparators) {
comparatorsByPosition = Arrays.asList(comparators);
}
public void setComparatorByPosition(int index, String c) {
if (comparatorsByPosition == null) {
comparatorsByPosition = new ArrayList<String>();
}
while (comparatorsByPosition.size() <= index) {
comparatorsByPosition.add(null);
}
comparatorsByPosition.set(index, c);
}
@Override
public int compareTo(AbstractComposite o) {
return serialize().compareTo(o.serialize());
}
private String comparatorForSerializer(Serializer<?> s) {
String comparator = serializerToComparatorMapping.get(s.getClass());
if (comparator != null) {
return comparator;
}
return BYTESTYPE.getTypeName();
}
private Serializer<?> serializerForComparator(String c) {
int p = c.indexOf('(');
if (p >= 0) {
c = c.substring(0, p);
}
if (LEXICALUUIDTYPE.getTypeName().equals(c) || TIMEUUIDTYPE.getTypeName().equals(c)) {
return UUIDSerializer.get();
}
Serializer<?> s = SERIALIZERS.getInstance(serializerToComparatorMapping.inverse().get(c));
if (s != null) {
return s;
}
return ByteBufferSerializer.get();
}
private Serializer<?> serializerForPosition(int i) {
if (serializersByPosition == null) {
return null;
}
if (i >= serializersByPosition.size()) {
return null;
}
return serializersByPosition.get(i);
}
private Serializer<?> getSerializer(int i, String c) {
Serializer<?> s = serializerForPosition(i);
if (s != null) {
return s;
}
return serializerForComparator(c);
}
private String comparatorForPosition(int i) {
if (comparatorsByPosition == null) {
return null;
}
if (i >= comparatorsByPosition.size()) {
return null;
}
return comparatorsByPosition.get(i);
}
private String getComparator(int i, ByteBuffer bb) {
String name = comparatorForPosition(i);
if (name != null) {
return name;
}
if (!dynamic) {
if (bb.hasRemaining()) {
return BYTESTYPE.getTypeName();
} else {
return null;
}
}
if (bb.hasRemaining()) {
try {
int header = getShortLength(bb);
if ((header & 0x8000) == 0) {
name = Charsets.UTF_8.newDecoder().decode(getBytes(bb, header).duplicate()).toString();
} else {
byte a = (byte) (header & 0xFF);
name = aliasToComparatorMapping.get(a);
if (name == null) {
a = (byte) Character.toLowerCase((char) a);
name = aliasToComparatorMapping.get(a);
if (name != null) {
name += "(reversed=true)";
}
}
}
} catch (CharacterCodingException e) {
throw new RuntimeException(e);
}
}
if ((name != null) && (name.length() == 0)) {
name = null;
}
return name;
}
@Override
public void clear() {
serialized = null;
components = new ArrayList<Component<?>>();
}
@Override
public int size() {
return components.size();
}
@SuppressWarnings("unchecked")
public <T> AbstractComposite addComponent(int index, T element, ComponentEquality equality) {
serialized = null;
if (element instanceof Component) {
components.add(index, (Component<?>) element);
return this;
}
Serializer s = serializerForPosition(index);
if (s == null) {
s = SerializerTypeInferer.getSerializer(element);
}
String c = comparatorForPosition(index);
if (c == null) {
c = comparatorForSerializer(s);
}
components.add(index, new Component(element, null, s, c, equality));
setSerializerByPosition(index, s);
return this;
}
public <T> AbstractComposite addComponent(T value, Serializer<T> s) {
addComponent(value, s, comparatorForSerializer(s));
return this;
}
public <T> AbstractComposite addComponent(T value, Serializer<T> s, String comparator) {
addComponent(value, s, comparator, ComponentEquality.EQUAL);
return this;
}
public <T> AbstractComposite addComponent(
T value, Serializer<T> s, String comparator, ComponentEquality equality) {
addComponent(-1, value, s, comparator, equality);
return this;
}
@SuppressWarnings("unchecked")
public <T> AbstractComposite addComponent(
int index, T value, Serializer<T> s, String comparator, ComponentEquality equality) {
serialized = null;
if (value == null) {
throw new NullPointerException("Unable able to add null component");
}
if (index < 0) {
index = components.size();
}
while (components.size() < index) {
components.add(null);
}
components.add(index, new Component(value, null, s, comparator, equality));
return this;
}
private static Object mapIfNumber(Object o) {
if ((o instanceof Byte) || (o instanceof Integer) || (o instanceof Short)) {
return BigInteger.valueOf(((Number) o).longValue());
}
return o;
}
@SuppressWarnings({"unchecked"})
private static Collection<?> flatten(Collection<?> c) {
if (c instanceof AbstractComposite) {
return ((AbstractComposite) c).getComponents();
}
boolean hasCollection = false;
for (Object o : c) {
if (o instanceof Collection) {
hasCollection = true;
break;
}
}
if (!hasCollection) {
return c;
}
List newList = new ArrayList();
for (Object o : c) {
if (o instanceof Collection) {
newList.addAll(flatten((Collection) o));
} else {
newList.add(o);
}
}
return newList;
}
/**
* For education purposes, when addAll is called, it ultimately ends up calling add(int,Object).
* The call stack using JDK7 is the following. 1. addAll 2.
* AbstractCollection<E>.addAll(Collection<Object>) 3. AbstractList<E>.add(E) 4.
* AbstractComposite.add(int,Object)
*
* <p>What happens is AbstractList<E>.add(E) does this add(size(),E). Neither
* java.util.AbstractList or java.util.AbstractCollection provide storage in the base class. It
* expects the subclass to provide the storage.
*/
@Override
public boolean addAll(Collection<? extends Object> c) {
return super.addAll(flatten(c));
}
@Override
public boolean containsAll(Collection<?> c) {
return super.containsAll(flatten(c));
}
@Override
public boolean removeAll(Collection<?> c) {
return super.removeAll(flatten(c));
}
@Override
public boolean retainAll(Collection<?> c) {
return super.retainAll(flatten(c));
}
/**
* Method is similar to addAll(Collection<? extends Object>) in that it ends up calling
* AbstractComposite.add(int,Object).
*/
@Override
public boolean addAll(int i, Collection<? extends Object> c) {
return super.addAll(i, flatten(c));
}
/**
* add(int,Object) is the primary method that adds elements to the list. All other add methods end
* up here.
*/
@Override
public void add(int index, Object element) {
element = mapIfNumber(element);
addComponent(index, element, ComponentEquality.EQUAL);
}
/**
* remove(int) is the primary method that removes elements from the list. All other remove methods
* end up calling AbstractComposite.remove(int).
*/
@Override
public Object remove(int index) {
serialized = null;
Component prev = components.remove(index);
if (prev != null) {
return prev.getValue();
}
return null;
}
public <T> AbstractComposite setComponent(int index, T value, Serializer<T> s) {
setComponent(index, value, s, comparatorForSerializer(s));
return this;
}
public <T> AbstractComposite setComponent(
int index, T value, Serializer<T> s, String comparator) {
setComponent(index, value, s, comparator, ComponentEquality.EQUAL);
return this;
}
@SuppressWarnings("unchecked")
public <T> AbstractComposite setComponent(
int index, T value, Serializer<T> s, String comparator, ComponentEquality equality) {
serialized = null;
while (components.size() <= index) {
components.add(null);
}
components.set(index, new Component(value, null, s, comparator, equality));
return this;
}
@SuppressWarnings("unchecked")
@Override
public Object set(int index, Object element) {
serialized = null;
if (element instanceof Component) {
Component prev = components.set(index, (Component<?>) element);
if (prev != null) {
return prev.getValue();
}
return null;
}
element = mapIfNumber(element);
Serializer s = serializerForPosition(index);
if (s == null) {
s = SerializerTypeInferer.getSerializer(element);
}
String c = comparatorForPosition(index);
if (c == null) {
c = comparatorForSerializer(s);
}
Component prev =
components.set(index, new Component(element, null, s, c, ComponentEquality.EQUAL));
if (prev != null) {
return prev.getValue();
}
return null;
}
@Override
public Object get(int i) {
Component c = components.get(i);
if (c != null) {
return c.getValue();
}
return null;
}
public <T> T get(int i, Serializer<T> s) throws ClassCastException {
T value = null;
Component<?> c = components.get(i);
if (c != null) {
value = c.getValue(s);
}
return value;
}
public Component getComponent(int i) {
if (i >= components.size()) {
return null;
}
Component c = components.get(i);
return c;
}
public Iterator<Component<?>> componentsIterator() {
return components.iterator();
}
@SuppressWarnings("unchecked")
public ByteBuffer serialize() {
if (serialized != null) {
return serialized.duplicate();
}
ByteBufferOutputStream out = new ByteBufferOutputStream();
int i = 0;
for (Component c : components) {
Serializer<?> s = serializerForPosition(i);
ByteBuffer cb = c.getBytes(s);
if (cb == null) {
cb = ByteBuffer.allocate(0);
}
if (dynamic) {
String comparator = comparatorForPosition(i);
if (comparator == null) {
comparator = c.getComparator();
}
if (comparator == null) {
comparator = BYTESTYPE.getTypeName();
}
int p = comparator.indexOf("(reversed=true)");
boolean desc = false;
if (p >= 0) {
comparator = comparator.substring(0, p);
desc = true;
}
if (aliasToComparatorMapping.inverse().containsKey(comparator)) {
byte a = aliasToComparatorMapping.inverse().get(comparator);
if (desc) {
a = (byte) Character.toUpperCase((char) a);
}
out.writeShort((short) (0x8000 | a));
} else {
out.writeShort((short) comparator.length());
out.write(comparator.getBytes(Charsets.UTF_8));
}
// if (comparator.equals(BYTESTYPE.getTypeName()) && (cb.remaining() ==
// 0)) {
// log.warn("Writing zero-length BytesType, probably an error");
// }
}
out.writeShort((short) cb.remaining());
out.write(cb.slice());
if ((i == (components.size() - 1)) && (equality != ComponentEquality.EQUAL)) {
out.write(equality.toByte());
} else {
out.write(c.getEquality().toByte());
}
i++;
}
serialized = out.getByteBuffer();
return serialized.duplicate();
}
@SuppressWarnings("unchecked")
public void deserialize(ByteBuffer b) {
serialized = b.duplicate();
components = new ArrayList<Component<?>>();
String comparator = null;
int i = 0;
while ((comparator = getComparator(i, b)) != null) {
ByteBuffer data = getWithShortLength(b);
if (data != null) {
Serializer<?> s = getSerializer(i, comparator);
ComponentEquality equality = ComponentEquality.fromByte(b.get());
components.add(new Component(null, data.slice(), s, comparator, equality));
} else {
throw new RuntimeException("Missing component data in composite type");
}
i++;
}
}
protected static int getShortLength(ByteBuffer bb) {
int length = (bb.get() & 0xFF) << 8;
return length | (bb.get() & 0xFF);
}
protected static ByteBuffer getBytes(ByteBuffer bb, int length) {
ByteBuffer copy = bb.duplicate();
copy.limit(copy.position() + length);
bb.position(bb.position() + length);
return copy;
}
protected static ByteBuffer getWithShortLength(ByteBuffer bb) {
int length = getShortLength(bb);
return getBytes(bb, length);
}
public ComponentEquality getEquality() {
return equality;
}
public void setEquality(ComponentEquality equality) {
serialized = null;
this.equality = equality;
}
}