Package com.daml.ledger.javaapi.data.codegen

Class PrimitiveValueDecoders

java.lang.Object

com.daml.ledger.javaapi.data.codegen.PrimitiveValueDecoders

public final class PrimitiveValueDecoders
extends Object

ValueDecoders for Daml types that are not code-generated.

See Also:

• ValueDecoder

Field Summary

Fields

Modifier and Type	Field	Description
static final ValueDecoder<Boolean>	fromBool
static final ValueDecoder<LocalDate>	fromDate
static final ValueDecoder<Long>	fromInt64
static final ValueDecoder<BigDecimal>	fromNumeric
static final ValueDecoder<String>	fromParty
static final ValueDecoder<String>	fromText
static final ValueDecoder<Instant>	fromTimestamp
static final ValueDecoder<Unit>	fromUnit

Method Summary

Modifier and Type	Method	Description
static <T> ValueDecoder<ContractId<T>>	fromContractId(ValueDecoder<T> contractType)
static <K, V> ValueDecoder<Map<K,V>>	fromGenMap(ValueDecoder<K> keyType, ValueDecoder<V> valueType)	Specifically for decoding the DA.Internal.LF.Map primitive type.
static <T> ValueDecoder<List<T>>	fromList(ValueDecoder<T> element)
static <T> ValueDecoder<Optional<T>>	fromOptional(ValueDecoder<T> element)
static <T> ValueDecoder<Map<String,T>>	fromTextMap(ValueDecoder<T> valueType)	Specifically for decoding the DA.Internal.LF.TextMap primitive type.
static <T> ValueDecoder<T>	impossible()	Can be passed to decoder-producing functions to decode phantom type parameters only.

Methods inherited from class java.lang.Object

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

Field Details

fromBool

public static final ValueDecoder<Boolean> fromBool

fromInt64

public static final ValueDecoder<Long> fromInt64

fromText

public static final ValueDecoder<String> fromText

fromTimestamp

public static final ValueDecoder<Instant> fromTimestamp

fromParty

public static final ValueDecoder<String> fromParty

fromUnit

public static final ValueDecoder<Unit> fromUnit

fromDate

public static final ValueDecoder<LocalDate> fromDate

fromNumeric

public static final ValueDecoder<BigDecimal> fromNumeric

Method Details

fromList

public static <T> ValueDecoder<List<T>> fromList(ValueDecoder<T> element)

fromOptional

public static <T> ValueDecoder<Optional<T>> fromOptional(ValueDecoder<T> element)

fromContractId

public static <T> ValueDecoder<ContractId<T>> fromContractId(ValueDecoder<T> contractType)

fromTextMap

public static <T> ValueDecoder<Map<String,T>> fromTextMap(ValueDecoder<T> valueType)

Specifically for decoding the DA.Internal.LF.TextMap primitive type.

 // given a ValueDecoder<V> vdv
 // this decodes a TextMap
 Map<String, V> m1 = fromTextMap(vdv).decode(value);

 // this decodes a GenMap with a Text key type
 // which has an incompatible encoded format
 Map<String, V> m2 = fromGenMap(fromText, vdv).decode(value);
 

See Also:

• fromGenMap(com.daml.ledger.javaapi.data.codegen.ValueDecoder<K>, com.daml.ledger.javaapi.data.codegen.ValueDecoder<V>)

fromGenMap

public static <K,
V> ValueDecoder<Map<K,V>> fromGenMap(ValueDecoder<K> keyType,
 ValueDecoder<V> valueType)

Specifically for decoding the DA.Internal.LF.Map primitive type.

See Also:

• fromTextMap(com.daml.ledger.javaapi.data.codegen.ValueDecoder<T>)

impossible

public static <T> ValueDecoder<T> impossible()

Can be passed to decoder-producing functions to decode phantom type parameters only. Such type parameters appear on the left of the = in data declarations, but are used for no actual data. This will fail at runtime if the type parameter isn't really phantom.