Package org.web3j.abi

Class TypeDecoder

java.lang.Object

org.web3j.abi.TypeDecoder

public class TypeDecoder
extends Object

Ethereum Contract Application Binary Interface (ABI) decoding for types. Decoding is not documented, but is the reverse of the encoding details located here.

The public API is composed of "decode*" methods and provides backward-compatbility. See https://github.com/web3j/web3j/issues/1591 for a discussion about decoding and possible improvements.

Constructor Summary

Constructors

Constructor	Description
TypeDecoder()

Method Summary

Modifier and Type	Method	Description
static <T extends Type> T	decode(String input, int offset, Class<T> type)
static <T extends Array> T	decode(String input, int offset, TypeReference<T> typeReference)
static <T extends Type> T	decode(String input, Class<T> type)
static Address	decodeAddress(String input)
static Bool	decodeBool(String rawInput, int offset)
static <T extends Bytes> T	decodeBytes(String input, int offset, Class<T> type)
static <T extends Bytes> T	decodeBytes(String input, Class<T> type)
static <T extends Type> T	decodeDynamicArray(String input, int offset, TypeReference<T> typeReference)
static DynamicBytes	decodeDynamicBytes(String input, int offset)
static <T extends Type> T	decodeDynamicStruct(String input, int offset, TypeReference<T> typeReference)
static <T extends NumericType> T	decodeNumeric(String input, Class<T> type)
static <T extends Type> T	decodeStaticArray(String input, int offset, TypeReference<T> typeReference, int length)	Static array length cannot be passed as a type.
static <T extends Type> T	decodeStaticStruct(String input, int offset, TypeReference<T> typeReference)
static Utf8String	decodeUtf8String(String input, int offset)
static Type	instantiateType(String solidityType, Object value)
static Type	instantiateType(TypeReference ref, Object value)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

TypeDecoder

public TypeDecoder()

Method Details

instantiateType

public static Type instantiateType(String solidityType,
 Object value)
                            throws InvocationTargetException,
NoSuchMethodException,
InstantiationException,
IllegalAccessException,
ClassNotFoundException

Throws:

InvocationTargetException

NoSuchMethodException

InstantiationException

IllegalAccessException

ClassNotFoundException

instantiateType

public static Type instantiateType(TypeReference ref,
 Object value)
                            throws NoSuchMethodException,
IllegalAccessException,
InvocationTargetException,
InstantiationException,
ClassNotFoundException

Throws:

NoSuchMethodException

IllegalAccessException

InvocationTargetException

InstantiationException

ClassNotFoundException

decode

public static <T extends Array> T decode(String input,
 int offset,
 TypeReference<T> typeReference)

decode

public static <T extends Type> T decode(String input,
 int offset,
 Class<T> type)

decode

public static <T extends Type> T decode(String input,
 Class<T> type)

decodeAddress

public static Address decodeAddress(String input)

decodeNumeric

public static <T extends NumericType> T decodeNumeric(String input,
 Class<T> type)

decodeBool

public static Bool decodeBool(String rawInput,
 int offset)

decodeBytes

public static <T extends Bytes> T decodeBytes(String input,
 Class<T> type)

decodeBytes

public static <T extends Bytes> T decodeBytes(String input,
 int offset,
 Class<T> type)

decodeDynamicBytes

public static DynamicBytes decodeDynamicBytes(String input,
 int offset)

decodeUtf8String

public static Utf8String decodeUtf8String(String input,
 int offset)

decodeStaticArray

public static <T extends Type> T decodeStaticArray(String input,
 int offset,
 TypeReference<T> typeReference,
 int length)

Static array length cannot be passed as a type.

decodeStaticStruct

public static <T extends Type> T decodeStaticStruct(String input,
 int offset,
 TypeReference<T> typeReference)

decodeDynamicArray

public static <T extends Type> T decodeDynamicArray(String input,
 int offset,
 TypeReference<T> typeReference)

decodeDynamicStruct

public static <T extends Type> T decodeDynamicStruct(String input,
 int offset,
 TypeReference<T> typeReference)