Core Framework

/**
 * Utility for serializing Thrift objects into byte arrays or strings
 */
public class TSerializer {
    /** Create serializer with default binary protocol */
    public TSerializer() throws TTransportException;
    
    /** Create serializer with specific protocol factory */
    public TSerializer(TProtocolFactory protocolFactory) throws TTransportException;
    
    /** Serialize a Thrift object to byte array */
    public byte[] serialize(TBase<?, ?> base) throws TException;
    
    /** Serialize a Thrift object to string representation */
    public String toString(TBase<?, ?> base) throws TException;
}

/**
 * Utility for deserializing Thrift objects from byte arrays or strings
 * with support for partial deserialization
 */
public class TDeserializer {
    /** Create deserializer with default binary protocol */
    public TDeserializer() throws TTransportException;
    
    /** Create deserializer with specific protocol factory */
    public TDeserializer(TProtocolFactory protocolFactory) throws TTransportException;
    
    /** Create deserializer for partial deserialization with field processor */
    public TDeserializer(Class<? extends TBase> thriftClass, Collection<String> fieldNames, 
                        ThriftFieldValueProcessor processor, TProtocolFactory protocolFactory) throws TTransportException;
    
    /** Deserialize byte array into existing Thrift object */
    public void deserialize(TBase base, byte[] bytes) throws TException;
    
    /** Deserialize byte array subset into existing Thrift object */
    public void deserialize(TBase base, byte[] bytes, int offset, int length) throws TException;
    
    /** Deserialize string with specified charset into existing Thrift object */
    public void deserialize(TBase base, String data, String charset) throws TException;
    
    /** Deserialize string from byte array using UTF-8 encoding */
    public void fromString(TBase base, String data) throws TException;
    
    // Partial deserialization methods using field path
    /** Partially deserialize object into existing Thrift struct using field path */
    public void partialDeserialize(TBase tb, byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize boolean field using field path */
    public Boolean partialDeserializeBool(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize byte field using field path */
    public Byte partialDeserializeByte(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize double field using field path */
    public Double partialDeserializeDouble(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize 16-bit integer field using field path */
    public Short partialDeserializeI16(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize 32-bit integer field using field path */
    public Integer partialDeserializeI32(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize 64-bit integer field using field path */
    public Long partialDeserializeI64(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize string field using field path */
    public String partialDeserializeString(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize binary field using field path */
    public ByteBuffer partialDeserializeByteArray(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize set field ID in union using field path */
    public Short partialDeserializeSetFieldIdInUnion(byte[] bytes, TFieldIdEnum fieldIdPathFirst, TFieldIdEnum... fieldIdPathRest) throws TException;
    
    /** Partially deserialize complete object from bytes */
    public Object partialDeserializeObject(byte[] bytes) throws TException;
    
    /** Partially deserialize complete object from bytes with offset and length */
    public Object partialDeserializeObject(byte[] bytes, int offset, int length) throws TException;
    
    /** Get metadata for partial deserialization */
    public ThriftMetadata.ThriftStruct getMetadata();
}

import org.apache.thrift.TSerializer;
import org.apache.thrift.TDeserializer;
import org.apache.thrift.protocol.TBinaryProtocol;
import org.apache.thrift.protocol.TJSONProtocol;

// Basic serialization with binary protocol
TSerializer serializer = new TSerializer();
byte[] data = serializer.serialize(myThriftObject);

// Serialization with JSON protocol
TSerializer jsonSerializer = new TSerializer(new TJSONProtocol.Factory());
String jsonData = jsonSerializer.toString(myThriftObject);

// Basic deserialization
TDeserializer deserializer = new TDeserializer();
MyThriftClass obj = new MyThriftClass();
deserializer.deserialize(obj, data);

// Partial deserialization - extract only specific field using field enums
TDeserializer partialDeserializer = new TDeserializer();
String name = partialDeserializer.partialDeserializeString(data, MyThriftClass._Fields.NAME);
Integer age = partialDeserializer.partialDeserializeI32(data, MyThriftClass._Fields.AGE);

// Deserialize from JSON string
TDeserializer jsonDeserializer = new TDeserializer();
MyThriftClass objFromJson = new MyThriftClass();
jsonDeserializer.fromString(objFromJson, jsonString);

/**
 * Generic base interface for all generated Thrift objects
 * @param <T> The concrete type of the implementing class
 * @param <F> The field enum type for this class
 */
public interface TBase<T extends TBase<T, F>, F extends TFieldIdEnum> extends Serializable, Cloneable, Comparable<T> {
    /** Get field enum for the given field ID */
    public F fieldForId(int fieldId);
    
    /** Check if the specified field is set (has a value) */
    public boolean isSet(F field);
    
    /** Get the value of the specified field */
    public Object getFieldValue(F field);
    
    /** Set the value of the specified field */
    public void setFieldValue(F field, Object value);
    
    /** Create a deep copy of this object */
    public T deepCopy();
    
    /** Clear all fields (set them to null/default values) */
    public void clear();
}

/**
 * Interface for serializable Thrift objects
 */
public interface TSerializable {
    /** Read object data from protocol */
    public void read(TProtocol iprot) throws TException;
    
    /** Write object data to protocol */
    public void write(TProtocol oprot) throws TException;
}

/**
 * Interface for Thrift enum types
 */
public interface TEnum {
    /** Get the integer value of this enum */
    public int getValue();
}

/**
 * Interface for generated struct field enums
 */
public interface TFieldIdEnum {
    /** Get the Thrift field ID */
    public short getThriftFieldId();
    
    /** Get the field name */
    public String getFieldName();
}

/**
 * Interface for processing Thrift requests
 */
public interface TProcessor {
    /** Process a request from input protocol and write response to output protocol */
    public void process(TProtocol in, TProtocol out) throws TException;
}

/**
 * Factory for creating processor instances
 */
public interface TProcessorFactory {
    /** Create a new processor instance for the given transport */
    public TProcessor getProcessor(TTransport trans);
}

/**
 * Base implementation for synchronous processors
 */
public class TBaseProcessor implements TProcessor {
    /** Process request using registered process functions */
    public void process(TProtocol in, TProtocol out) throws TException;
    
    /** Register a process function for a method name */
    protected void registerProcessor(String methodName, ProcessFunction<?, ?> fn);
}

/**
 * Interface for asynchronous processing
 */
public interface TAsyncProcessor {
    /** Process async request with callback */
    public void process(AsyncProcessFunction<?, ?, ?> function, TProtocol iproto, TProtocol oproto, AsyncMethodCallback callback) throws TException;
}

/**
 * Base implementation for asynchronous processors
 */
public class TBaseAsyncProcessor implements TAsyncProcessor {
    /** Process async request using registered async process functions */
    public void process(AsyncProcessFunction<?, ?, ?> function, TProtocol iproto, TProtocol oproto, AsyncMethodCallback callback) throws TException;
    
    /** Register an async process function for a method name */
    protected void registerProcessor(String methodName, AsyncProcessFunction<?, ?, ?> fn);
}

/**
 * Base class for generated service clients
 */
public class TServiceClient {
    /** Create client with single protocol for both input and output */
    public TServiceClient(TProtocol prot);
    
    /** Create client with separate input and output protocols */
    public TServiceClient(TProtocol iprot, TProtocol oprot);
    
    /** Get the input protocol */
    protected TProtocol getInputProtocol();
    
    /** Get the output protocol */
    protected TProtocol getOutputProtocol();
}

/**
 * Factory for creating service client instances
 * @param <T> The service client type
 */
public class TServiceClientFactory<T extends TServiceClient> {
    /** Create client with single protocol */
    public T getClient(TProtocol prot);
    
    /** Create client with separate input/output protocols */
    public T getClient(TProtocol iprot, TProtocol oprot);
}

/**
 * Configuration settings for Thrift operations with size and recursion limits
 */
public class TConfiguration {
    /** Default maximum message size (100MB) */
    public static final int DEFAULT_MAX_MESSAGE_SIZE = 100 * 1024 * 1024;
    
    /** Default maximum frame size (~16MB) */
    public static final int DEFAULT_MAX_FRAME_SIZE = 16384000;
    
    /** Default recursion depth limit */
    public static final int DEFAULT_RECURSION_DEPTH = 64;
    
    /** Create configuration with default values */
    public TConfiguration();
    
    /** Create configuration with specified limits */
    public TConfiguration(int maxMessageSize, int maxFrameSize, int recursionLimit);
    
    /** Default configuration instance */
    public static final TConfiguration DEFAULT = new Builder().build();
    
    /** Get maximum message size */
    public int getMaxMessageSize();
    
    /** Get maximum frame size */
    public int getMaxFrameSize();
    
    /** Get recursion limit */
    public int getRecursionLimit();
    
    /** Create a builder for custom configuration */
    public static Builder custom();
    
    public static class Builder {
        /** Set maximum message size */
        public Builder setMaxMessageSize(int maxMessageSize);
        
        /** Set maximum frame size */
        public Builder setMaxFrameSize(int maxFrameSize);
        
        /** Set recursion limit */
        public Builder setRecursionLimit(int recursionLimit);
        
        /** Build the configuration */
        public TConfiguration build();
    }
}

/**
 * Processor that supports multiplexed services
 */
public class TMultiplexedProcessor implements TProcessor {
    /** Create multiplexed processor */
    public TMultiplexedProcessor();
    
    /** Register a processor for a service name */
    public void registerProcessor(String serviceName, TProcessor processor);
    
    /** Process request, routing to appropriate service processor */
    public void process(TProtocol in, TProtocol out) throws TException;
}

/**
 * Abstract base class for generated union types
 * @param <T> The concrete type of the implementing union class
 * @param <F> The field enum type for this union
 */
public abstract class TUnion<T extends TUnion<T, F>, F extends TFieldIdEnum> implements TBase<T, F> {
    /** Default constructor */
    protected TUnion();
    
    /** Constructor with initial field and value */
    protected TUnion(F setField, Object value);
    
    /** Copy constructor */
    protected TUnion(TUnion<T, F> other);
    
    /** Check if any field is set */
    public boolean isSet();
    
    /** Get the currently set field */
    public F getSetField();
    
    /** Get the value of the currently set field */
    public Object getFieldValue();
    
    /** Set a field value (clears other fields) */
    public void setFieldValue(F field, Object value);
    
    /** Get the value of the specified field */
    public Object getFieldValue(F field);
    
    /** Clear all fields */
    public void clear();
    
    /** Create a deep copy */
    public T deepCopy();
}

/**
 * Base exception class for all Thrift-related errors
 */
public class TException extends Exception {
    /** Create exception with no message */
    public TException();
    
    /** Create exception with message */
    public TException(String message);
    
    /** Create exception wrapping another throwable */
    public TException(Throwable cause);
    
    /** Create exception with message and cause */
    public TException(String message, Throwable cause);
}

/**
 * Application-level exception with specific error types
 */
public class TApplicationException extends TException {
    /** Unknown error */
    public static final int UNKNOWN = 0;
    /** Unknown method name */
    public static final int UNKNOWN_METHOD = 1;
    /** Invalid message type */
    public static final int INVALID_MESSAGE_TYPE = 2;
    /** Wrong method name in response */
    public static final int WRONG_METHOD_NAME = 3;
    /** Bad sequence ID in response */
    public static final int BAD_SEQUENCE_ID = 4;
    /** Missing result in response */
    public static final int MISSING_RESULT = 5;
    /** Internal server error */
    public static final int INTERNAL_ERROR = 6;
    /** Protocol error */
    public static final int PROTOCOL_ERROR = 7;
    /** Invalid data transform */
    public static final int INVALID_TRANSFORM = 8;
    /** Invalid protocol */
    public static final int INVALID_PROTOCOL = 9;
    /** Unsupported client type */
    public static final int UNSUPPORTED_CLIENT_TYPE = 10;
    
    /** Create exception with unknown type */
    public TApplicationException();
    
    /** Create exception with specific type */
    public TApplicationException(int type);
    
    /** Create exception with type and message */
    public TApplicationException(int type, String message);
    
    /** Create exception with message */
    public TApplicationException(String message);
    
    /** Get the exception type */
    public int getType();
    
    /** Read exception from protocol */
    public static TApplicationException readFrom(TProtocol iprot) throws TException;
    
    /** Write exception to protocol */
    public void write(TProtocol oprot) throws TException;
}

/**
 * Encoding and decoding utilities
 */
public final class EncodingUtils {
    /** Set bit in integer value */
    public static int setBit(int n, int pos, boolean value);
    
    /** Clear bit in integer value */
    public static int clearBit(int n, int pos);
    
    /** Test if bit is set in integer value */
    public static boolean testBit(int n, int pos);
    
    /** Encode integer as big-endian bytes */
    public static void encodeBigEndian(int val, byte[] buf, int offset);
    
    /** Decode big-endian bytes as integer */
    public static int decodeBigEndian(byte[] buf, int offset);
}

/**
 * Helper methods for TBase objects
 */
public final class TBaseHelper {
    /** Compare two objects (null-safe) */
    public static int compareTo(Object a, Object b);
    
    /** Convert object to string representation */
    public static String toString(Object o, StringBuilder sb);
    
    /** Copy binary data */
    public static ByteBuffer copyBinary(ByteBuffer orig);
    
    /** Compare binary data */
    public static int compareBinary(ByteBuffer a, ByteBuffer b);
    
    /** Deep copy a TBase object */
    public static <T extends TBase<T, F>, F extends TFieldIdEnum> T deepCopy(T orig);
}

/**
 * Helper methods for TEnum objects
 */
public final class TEnumHelper {
    /** Find enum value by integer value */
    public static <T extends TEnum> T findByValue(Class<T> enumClass, int value);
    
    /** Read enum value using standard scheme */
    public static <T extends TEnum> T standardSchemeReadValue(TProtocol iprot, Class<T> enumClass) throws TException;
    
    /** Write enum value using standard scheme */
    public static void standardSchemeWriteValue(TProtocol oprot, TEnum enumValue) throws TException;
}

/**
 * Optional value container
 */
public class Option<T> {
    /** Create empty option */
    public static <T> Option<T> fromNullable(T value);
    
    /** Check if value is present */
    public boolean has();
    
    /** Get the value (throws if not present) */
    public T get();
    
    /** Get the value or return alternative */
    public T or(T alternative);
}

/**
 * Field requirement type constants
 */
public final class TFieldRequirementType {
    public static final byte REQUIRED = 1;
    public static final byte OPTIONAL = 2;
    public static final byte DEFAULT = 3;
}