com.netflix.astyanax.serializers.SerializerPackageImpl Maven / Gradle / Ivy
package com.netflix.astyanax.serializers;
import java.nio.ByteBuffer;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
//import org.apache.cassandra.config.ConfigurationException;
import org.apache.cassandra.db.marshal.CompositeType;
import org.apache.cassandra.db.marshal.TypeParser;
import org.apache.commons.lang.StringUtils;
import com.netflix.astyanax.Serializer;
import com.netflix.astyanax.SerializerPackage;
import com.netflix.astyanax.ddl.ColumnDefinition;
import com.netflix.astyanax.ddl.ColumnFamilyDefinition;
/**
* Basic implementation of SerializerPackage which can be configured either from
* a ColumnFamilyDefinition or by manually setting either the ComparatorType or
* Serializer for keys, columns and values. Use this in conjunction with the CSV
* uploader to specify how values are serializer.
*
* @author elandau
*
*/
public class SerializerPackageImpl implements SerializerPackage {
private final static Serializer DEFAULT_SERIALIZER = BytesArraySerializer.get();
public final static SerializerPackage DEFAULT_SERIALIZER_PACKAGE = new SerializerPackageImpl();
private Serializer keySerializer = DEFAULT_SERIALIZER;
private Serializer columnSerializer = DEFAULT_SERIALIZER;
private Serializer defaultValueSerializer = DEFAULT_SERIALIZER;
private final Map> valueSerializers = new HashMap>();;
public SerializerPackageImpl() {
}
/**
* Construct a serializer package from a column family definition retrieved
* from the keyspace. This is the preferred method of initialing the
* serializer since it most closely matches the validators and comparator
* type set in cassandra.
*
* @param cfDef
* @param ignoreErrors
* @throws UnknownComparatorException
*/
public SerializerPackageImpl(ColumnFamilyDefinition cfDef, boolean ignoreErrors) throws UnknownComparatorException {
try {
setKeyType(cfDef.getKeyValidationClass());
}
catch (UnknownComparatorException e) {
if (!ignoreErrors)
throw e;
}
try {
setColumnType(cfDef.getComparatorType());
}
catch (UnknownComparatorException e) {
if (!ignoreErrors)
throw e;
}
try {
setDefaultValueType(cfDef.getDefaultValidationClass());
}
catch (UnknownComparatorException e) {
if (!ignoreErrors)
throw e;
}
List colsDefs = cfDef.getColumnDefinitionList();
if (colsDefs != null) {
for (ColumnDefinition colDef : colsDefs) {
try {
this.setValueType(colDef.getRawName(), colDef.getValidationClass());
}
catch (UnknownComparatorException e) {
if (!ignoreErrors)
throw e;
}
}
}
}
public SerializerPackageImpl setKeyType(String keyType) throws UnknownComparatorException {
String comparatorType = StringUtils.substringBefore(keyType, "(");
ComparatorType type = ComparatorType.getByClassName(comparatorType);
if (type == null) {
throw new UnknownComparatorException(keyType);
}
if (type == ComparatorType.COMPOSITETYPE) {
try {
this.keySerializer = new SpecificCompositeSerializer((CompositeType) TypeParser.parse(keyType));
return this;
}
catch (Exception e) {
// Ignore and simply use the default serializer
}
throw new UnknownComparatorException(keyType);
}
else if (type == ComparatorType.DYNAMICCOMPOSITETYPE) {
// TODO
throw new UnknownComparatorException(keyType);
}
else {
this.keySerializer = type.getSerializer();
}
return this;
}
public SerializerPackageImpl setKeySerializer(Serializer serializer) {
this.keySerializer = serializer;
return this;
}
@Deprecated
public SerializerPackageImpl setColumnType(String columnType) throws UnknownComparatorException {
return setColumnNameType(columnType);
}
public SerializerPackageImpl setColumnNameType(String columnType) throws UnknownComparatorException {
// Determine the column serializer
String comparatorType = StringUtils.substringBefore(columnType, "(");
ComparatorType type = ComparatorType.getByClassName(comparatorType);
if (type == null) {
throw new UnknownComparatorException(columnType);
}
if (type == ComparatorType.COMPOSITETYPE) {
try {
this.columnSerializer = new SpecificCompositeSerializer((CompositeType) TypeParser.parse(columnType));
return this;
}
catch (Exception e) {
// Ignore and simply use the default serializer
}
throw new UnknownComparatorException(columnType);
}
else if (type == ComparatorType.DYNAMICCOMPOSITETYPE) {
// TODO
throw new UnknownComparatorException(columnType);
}
else {
this.columnSerializer = type.getSerializer();
}
return this;
}
public SerializerPackageImpl setColumnNameSerializer(Serializer serializer) {
this.columnSerializer = serializer;
return this;
}
public SerializerPackageImpl setDefaultValueType(String valueType) throws UnknownComparatorException {
// Determine the VALUE serializer. There is always a default serializer
// and potentially column specific serializers
ComparatorType type = ComparatorType.getByClassName(valueType);
if (type == null) {
throw new UnknownComparatorException(valueType);
}
this.defaultValueSerializer = type.getSerializer();
return this;
}
public SerializerPackageImpl setDefaultValueSerializer(Serializer serializer) {
this.defaultValueSerializer = serializer;
return this;
}
public SerializerPackageImpl setValueType(String columnName, String type) throws UnknownComparatorException {
setValueType(StringSerializer.get().toByteBuffer(columnName), type);
return this;
}
public SerializerPackageImpl setValueType(ByteBuffer columnName, String valueType)
throws UnknownComparatorException {
ComparatorType type = ComparatorType.getByClassName(valueType);
if (type == null) {
throw new UnknownComparatorException(valueType);
}
this.valueSerializers.put(columnName, type.getSerializer());
return this;
}
public SerializerPackageImpl setValueSerializer(String columnName, Serializer serializer) {
this.valueSerializers.put(StringSerializer.get().toByteBuffer(columnName), serializer);
return this;
}
public SerializerPackageImpl setValueSerializer(ByteBuffer columnName, Serializer serializer) {
this.valueSerializers.put(columnName, serializer);
return this;
}
@Override
public Serializer getKeySerializer() {
return this.keySerializer;
}
@Override
@Deprecated
public Serializer getColumnSerializer() {
return getColumnNameSerializer();
}
@Override
public Serializer getColumnNameSerializer() {
return this.columnSerializer;
}
@Override
@Deprecated
public Serializer getValueSerializer(ByteBuffer columnName) {
return getColumnSerializer(columnName);
}
public Serializer getColumnSerializer(ByteBuffer columnName) {
if (valueSerializers == null) {
return defaultValueSerializer;
}
Serializer ser = valueSerializers.get(columnName);
if (ser == null) {
return defaultValueSerializer;
}
return ser;
}
@Override
public Serializer getColumnSerializer(String columnName) {
return getValueSerializer(StringSerializer.get().toByteBuffer(columnName));
}
@Override
@Deprecated
public Serializer getValueSerializer(String columnName) {
return getColumnSerializer(columnName);
}
@Override
public Set getColumnNames() {
Set set = new HashSet();
if (valueSerializers != null) {
for (Entry> entry : valueSerializers.entrySet()) {
set.add(entry.getKey().duplicate());
}
}
return set;
}
@Override
@Deprecated
public Serializer getValueSerializer() {
return getDefaultValueSerializer();
}
@Override
public Serializer getDefaultValueSerializer() {
return defaultValueSerializer;
}
@Override
public String keyAsString(ByteBuffer key) {
return this.keySerializer.getString(key);
}
@Override
public String columnAsString(ByteBuffer column) {
return this.columnSerializer.getString(column);
}
@Override
public String valueAsString(ByteBuffer column, ByteBuffer value) {
Serializer serializer = this.valueSerializers.get(column);
if (serializer == null) {
return this.defaultValueSerializer.getString(value);
}
else {
return serializer.getString(value);
}
}
@Override
public ByteBuffer keyAsByteBuffer(String key) {
return this.keySerializer.fromString(key);
}
@Override
public ByteBuffer columnAsByteBuffer(String column) {
return this.columnSerializer.fromString(column);
}
@Override
public ByteBuffer valueAsByteBuffer(ByteBuffer column, String value) {
Serializer serializer = this.valueSerializers.get(column);
if (serializer == null) {
return this.defaultValueSerializer.fromString(value);
}
else {
return serializer.fromString(value);
}
}
@Override
public ByteBuffer valueAsByteBuffer(String column, String value) {
return valueAsByteBuffer(this.columnSerializer.fromString(column), value);
}
}