net.corda.finance.workflows.asset.selection

Class CashSelectionPostgreSQLImpl

AbstractCashSelection

net.corda.finance.workflows.asset.selection.CashSelectionPostgreSQLImpl

public class CashSelectionPostgreSQLImpl
extends AbstractCashSelection

Field Detail

JDBC_DRIVER_NAME

@NotNull
public static java.lang.String JDBC_DRIVER_NAME

See Also:

Constant Field Values

Companion

public static net.corda.finance.workflows.asset.selection.CashSelectionPostgreSQLImpl.Companion Companion

Constructor Detail

CashSelectionPostgreSQLImpl

public CashSelectionPostgreSQLImpl()

Method Detail

isCompatible

protected boolean isCompatible(@NotNull
                               java.sql.DatabaseMetaData metadata)

Upon dynamically loading configured Cash Selection algorithms declared in META-INF/services this method determines whether the loaded implementation is compatible and usable with the currently loaded JDBC driver. Note: the first loaded implementation to pass this check will be used at run-time.

toString

@NotNull
public java.lang.String toString()

executeQuery

protected boolean executeQuery(@NotNull
                               java.sql.Connection connection,
                               @NotNull
                               Amount<java.util.Currency> amount,
                               @NotNull
                               java.util.UUID lockId,
                               @Nullable
                               Party notary,
                               @NotNull
                               java.util.Set<? extends net.corda.core.identity.AbstractParty> onlyFromIssuerParties,
                               @NotNull
                               java.util.Set<? extends net.corda.core.utilities.OpaqueBytes> withIssuerRefs,
                               @NotNull
                               kotlin.jvm.functions.Function1<? super java.sql.ResultSet,java.lang.Boolean> withResultSet)

A vendor specific query(ies) to gather Cash states that are available.

Parameters:

amount - The amount of currency desired (ignoring issues, but specifying the currency)

lockId - The FlowLogic.runId.uuid of the flow, which is used to soft reserve the states.Also, previous outputs of the flow will be eligible as they are implicitly locked with this id until the flow completes.

notary - If null the notary source is ignored, if specified then only states markedwith this notary are included.

onlyFromIssuerParties - Optional issuer parties to match against.

withIssuerRefs - Optional issuer references to match against.

withResultSet - Function that contains the business logic. The JDBC ResultSet with the matching states that were found. If sufficient funds were found these will be locked,otherwise what is available is returned unlocked for informational purposes.

Returns:

The result of the withResultSet function