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Mikko Koppanen committed Aug 12, 2011
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2 changes: 2 additions & 0 deletions ChangeLog
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0.1.0
- Initial release
174 changes: 174 additions & 0 deletions LICENSE
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140 changes: 140 additions & 0 deletions README.md
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# Introduction

Pretty much very experimental PDO driver for Cassandra CQL.


# Dependencies

- PHP and PDO
- Thrift
- Boost (shared_ptr)


# How to build?

First install thrift from http://thrift.apache.org/download/. Thrift should depend on
boost shared_ptr so while installing thrift you are installing rest of the dependencies
for pdo_cassandra (apart from PHP and PDO of course).

pdo_cassandra ./configure script takes the following options:

- --with-pdo-cassandra[=FILE] where file is optional path to Cassandra Thrift definitions file. The file is
bundled with the package so it is unlikely that alternative file is needed unless testing new versions.

- --with-thrift-dir[=DIR] can be used to specify 'non-standard' thrift installation prefix.

- --with-boost-dir[=DIR] can be used to specify 'non-standard' boost installation prefix.


# Running tests

After a successful build tests can be executed using an instance of Cassandra. Default config
for Cassandra should be fine.

Before make test:

$ cp tests/config.inc-dist tests/config.inc
$ $EDITOR tests/config.inc

This is to prevent accidentally dropping keyspaces that might in use.


# DSN

The DSN format is as follows:

- "cassandra:host=127.0.0.1;port=9160"

Multiple hosts can be specified using the following format:

- "cassandra:host=127.0.0.1;port=9160,host=localhost;port=9160"


# Prepared statements

CQL doesn't support prepared statements so PDO emulation layer is used for this. Notice that quoting of the
identifiers is simple 'addslashes' call on the data and isn't necessarily as safe as prepared statements.

It is also important to specify the types of the bound parameters as (string) "1" might get convert to a
string value internally even though integer might be more appropriated.


# Transactions

Transactions are not supported and calling PDO::beginTransaction will result in an exception.


# Contributing

Pull requests containing fixes and/or additional tests are highly appreciated.


# Driver specific attributes for PDO::setAttribute

<table>
<tr>
<td>PDO::CASSANDRA_ATTR_NUM_RETRIES</td>
<td>integer</td>
<td>The amount of connection retries</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_RETRY_INTERVAL</td>
<td>integer</td>
<td>Sets how many times to keep retrying a host before marking it as down.</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_MAX_CONSECUTIVE_FAILURES</td>
<td>integer</td>
<td>Sets how many times to keep retrying a host before marking it as down.</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_LINGER</td>
<td>integer</td>
<td>How long does the socket linger after it's being closed</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_NO_DELAY</td>
<td>boolean</td>
<td>Whether to enable/disable Nagle algorithm</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_CONN_TIMEOUT</td>
<td>integer</td>
<td>Connection timeout</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_RECV_TIMEOUT</td>
<td>integer</td>
<td>Receive timeout</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_SEND_TIMEOUT</td>
<td>integer</td>
<td>Send timeout</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_COMPRESSION</td>
<td>boolean</td>
<td>Whether to enable/disable compression</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_THRIFT_DEBUG</td>
<td>boolean</td>
<td>Converts thrift debug output into PHP warnings</td>
</tr>
</table>

## The constructor honours the following options

These options can be passed in the fourth argument for PDO constructor

<table>
<tr>
<td>PDO_ATTR_TIMEOUT</td>
<td>Connection timeout value</td>
</tr>
<tr>
<td>PDO::CASSANDRA_ATTR_THRIFT_DEBUG</td>
<td>Converts thrift debug output into PHP warnings</td>
</tr>
</table>
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