TxInfo

Value parameters

datumHash

the hash of the datum to search for

Attributes

Returns

Some(Datum) if the datum is found in either transaction outputs or datum lookup map, None otherwise

Example

val txInfo = TxInfo(...)
val datumHash = DatumHash(...)
val maybeDatum = txInfo.findOwnDatum(datumHash)
// Returns Some(Datum) if the datumHash exists in txInfo.data or txInfo.outputs
// Returns None if the datumHash is not found

Value parameters

outRef

the transaction output reference to search for

Attributes

Returns

Some(TxInInfo) if the input is found, None otherwise

Example

val txInfo = TxInfo(...)
val outRef = TxOutRef(txId, 0)
val maybeInput = txInfo.findOwnInput(outRef)
// Returns Some(TxInInfo) if the outRef exists in txInfo.inputs
// Returns None if the outRef is not found

Value parameters

message

the error message to use if the input is not found

outRef

the transaction output reference to search for

Attributes

Returns

TxInInfo if the input is found

Example

val txInfo = TxInfo(...)
val outRef = TxOutRef(txId, 0)
val input = txInfo.findOwnInputOrFail(outRef, "Input not found")
// Returns TxInInfo if the outRef exists in txInfo.inputs
// Fails with "Input not found" if the outRef is not found

Value parameters

pred

the predicate function to test each input

Attributes

Returns

List of transaction inputs that satisfy the predicate

Example

val txInfo = TxInfo(...)
val inputs = txInfo.findOwnInputs(in => in.resolved.value.lovelace > 1000000)
// Returns List[TxInInfo] containing all inputs with more than 1 ADA
// Returns empty List if no inputs match the predicate

Value parameters

cred

the credential to search for in input addresses

Attributes

Returns

List of transaction inputs whose resolved addresses match the given credential

Example

val txInfo = TxInfo(...)
val credential = Credential.PubKey(pubKeyHash)
val inputs = txInfo.getOwnInputsByCredential(credential)
// Returns List[TxInInfo] containing all inputs locked by the credential
// Returns empty List if no matching inputs are found

Value parameters

pred

the predicate function to test each output

Attributes

Returns

List of transaction outputs that satisfy the predicate

Example

val txInfo = TxInfo(...)
val outputs = txInfo.findOwnOutputs(out => out.value.lovelace > 1000000)
// Returns List[TxOut] containing all outputs with more than 1 ADA
// Returns empty List if no outputs match the predicate

Value parameters

cred

the credential to search for in output addresses

Attributes

Returns

List of transaction outputs whose addresses match the given credential

Example

val txInfo = TxInfo(...)
val credential = Credential.PubKey(pubKeyHash)
val outputs = txInfo.getOwnOutputsByCredential(credential)
// Returns List[TxOut] containing all outputs locked by the credential
// Returns empty List if no matching outputs are found

Value parameters

scriptHash

the hash of the validator script to search for

Attributes

Returns

List of transaction outputs that are locked by the given validator script

Example

val txInfo = TxInfo(...)
val validatorHash = ValidatorHash(...)
val scriptOutputs = txInfo.findOwnScriptOutputs(validatorHash)
// Returns List[TxOut] containing all outputs locked by the validator script
// Returns empty List if no matching outputs are found

Attributes

Returns

the start time as PosixTime if the validity range has a finite lower bound, otherwise 0

Example

val txInfo = TxInfo(...)
val startTime = txInfo.getValidityStartTime
// Returns the PosixTime of the validity range's lower bound
// Returns BigInt(0) if the lower bound is infinite or unbounded

Attributes

Returns

true if the transaction signatories list includes the given keyHash, false otherwise