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next.jdbc.prepare

Mostly an implementation namespace for how PreparedStatement objects are created by the next generation java.jdbc library.

set-parameters is public and may be useful if you have a PreparedStatement that you wish to reuse and (re)set the parameters on it.

execute-batch! provides a way to add batches of parameters to a PreparedStatement and then execute it in batch mode (via .executeBatch).

Defines the SettableParameter protocol for converting Clojure values to database-specific values.

Mostly an implementation namespace for how `PreparedStatement` objects are
created by the next generation java.jdbc library.

`set-parameters` is public and may be useful if you have a `PreparedStatement`
that you wish to reuse and (re)set the parameters on it.

`execute-batch!` provides a way to add batches of parameters to a
`PreparedStatement` and then execute it in batch mode (via `.executeBatch`).

Defines the `SettableParameter` protocol for converting Clojure values
to database-specific values.

create

(create con
        sql
        params
        {:keys [return-keys result-type concurrency cursors fetch-size
                max-rows timeout]})

This is an implementation detail -- use next.jdbc/prepare instead.

Given a Connection, a SQL string, some parameters, and some options, return a PreparedStatement representing that.

This is an implementation detail -- use `next.jdbc/prepare` instead.

Given a `Connection`, a SQL string, some parameters, and some options,
return a `PreparedStatement` representing that.
sourceraw docstring

execute-batch!

(execute-batch! ps param-groups)
(execute-batch! ps param-groups opts)

Given a PreparedStatement and a vector containing parameter groups, i.e., a vector of vector of parameters, use .addBatch to add each group of parameters to the prepared statement (via set-parameters) and then call .executeBatch. A vector of update counts is returned.

An options hash map may also be provided, containing :batch-size which determines how to partition the parameter groups for submission to the database. If omitted, all groups will be submitted as a single command. If you expect the update counts to be larger than Integer/MAX_VALUE, you can specify :large true and .executeLargeBatch will be called instead.

Returns a Clojure vector of update counts.

May throw java.sql.BatchUpdateException if any part of the batch fails. You may be able to call .getUpdateCounts on that exception object to get more information about which parts succeeded and which failed.

For additional caveats and database-specific options you may need, see: https://cljdoc.org/d/seancorfield/next.jdbc/CURRENT/doc/getting-started/prepared-statements#caveats

Not all databases support batch execution.

Given a `PreparedStatement` and a vector containing parameter groups,
i.e., a vector of vector of parameters, use `.addBatch` to add each group
of parameters to the prepared statement (via `set-parameters`) and then
call `.executeBatch`. A vector of update counts is returned.

An options hash map may also be provided, containing `:batch-size` which
determines how to partition the parameter groups for submission to the
database. If omitted, all groups will be submitted as a single command.
If you expect the update counts to be larger than `Integer/MAX_VALUE`,
you can specify `:large true` and `.executeLargeBatch` will be called
instead.

Returns a Clojure vector of update counts.

May throw `java.sql.BatchUpdateException` if any part of the batch fails.
You may be able to call `.getUpdateCounts` on that exception object to
get more information about which parts succeeded and which failed.

For additional caveats and database-specific options you may need, see:
https://cljdoc.org/d/seancorfield/next.jdbc/CURRENT/doc/getting-started/prepared-statements#caveats

Not all databases support batch execution.
sourceraw docstring

set-parameters

(set-parameters ps params)

Given a PreparedStatement and a vector of parameter values, update the PreparedStatement with those parameters and return it.

Given a `PreparedStatement` and a vector of parameter values, update the
`PreparedStatement` with those parameters and return it.
sourceraw docstring

SettableParameterprotocol

Protocol for setting SQL parameters in statement objects, which can convert from Clojure values. The default implementation just calls .setObject on the parameter value. It can be extended to use other methods of PreparedStatement to convert and set parameter values. Extension via metadata is supported.

Protocol for setting SQL parameters in statement objects, which
can convert from Clojure values. The default implementation just
calls `.setObject` on the parameter value. It can be extended to
use other methods of `PreparedStatement` to convert and set parameter
values. Extension via metadata is supported.
set-parameter
(set-parameter val stmt ix)

Convert a Clojure value into a SQL value and store it as the ix'th parameter in the given SQL statement object.

Convert a Clojure value into a SQL value and store it as the ix'th
parameter in the given SQL statement object.

sourceraw docstring

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