[#wallet-BerkeleyROBatch]
= xref:wallet.adoc[wallet]::BerkeleyROBatch
:relfileprefix: ../
:mrdocs:

RAII class that provides access to a BerkeleyRODatabase

== Synopsis

Declared in `<wallet/migrate.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class BerkeleyROBatch
    : public xref:wallet/DatabaseBatch.adoc[DatabaseBatch]
----

== Base Classes

[cols="1,4"]
|===
| Name| Description
| `xref:wallet/DatabaseBatch.adoc[DatabaseBatch]`
| RAII class that provides access to a WalletDatabase
|===

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:wallet/BerkeleyROBatch/2constructor-0c.adoc[`BerkeleyROBatch`]         [.small]#[constructor]#
| Constructors
| xref:wallet/BerkeleyROBatch/2destructor.adoc[`~BerkeleyROBatch`] [.small]#[destructor]# [.small]#[virtual]#
| Destroy the batch.
| xref:wallet/BerkeleyROBatch/operator_assign-08.adoc[`operator=`] 
| Assignment operators
| xref:wallet/BerkeleyROBatch/Close.adoc[`Close`]  [.small]#[virtual]#
| Close the batch. No‐op for this read‐only batch.
| xref:wallet/DatabaseBatch/Erase.adoc[`Erase`] 
| Erases the record stored under a key.
| xref:wallet/DatabaseBatch/ErasePrefix.adoc[`ErasePrefix`]  [.small]#[virtual]#
| Erases all records whose key begins with the given prefix.
| xref:wallet/DatabaseBatch/Exists.adoc[`Exists`] 
| Returns whether a record exists for a key.
| xref:wallet/BerkeleyROBatch/GetNewCursor.adoc[`GetNewCursor`]  [.small]#[virtual]#
| Get a cursor iterating over all records in the database.
| xref:wallet/BerkeleyROBatch/GetNewPrefixCursor.adoc[`GetNewPrefixCursor`]  [.small]#[virtual]#
| Get a cursor iterating over records whose key starts with a prefix.
| xref:wallet/BerkeleyROBatch/HasActiveTxn.adoc[`HasActiveTxn`]  [.small]#[virtual]#
| Report whether a database transaction is active.
| xref:wallet/DatabaseBatch/Read.adoc[`Read`] 
| Reads the value stored under a key.
| xref:wallet/BerkeleyROBatch/TxnAbort.adoc[`TxnAbort`]  [.small]#[virtual]#
| Abort the current database transaction.
| xref:wallet/BerkeleyROBatch/TxnBegin.adoc[`TxnBegin`]  [.small]#[virtual]#
| Begin a database transaction.
| xref:wallet/BerkeleyROBatch/TxnCommit.adoc[`TxnCommit`]  [.small]#[virtual]#
| Commit the current database transaction.
| xref:wallet/DatabaseBatch/Write.adoc[`Write`] 
| Writes a value under a key.
|===



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