SOLR

1.Solr server setup

l Java environment setup

Download linux JDK 6 from this website :

http://java.sun.com/javase/downloads/index.jsp

After installing JDK, edit /ect/profile , add these code to the end of the file

JAVA_HOME=/usr/java/jdk1.6.0_16

PATH=$JAVA_HOME/bin:$PATH

CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar

export JAVA_HOME

export PATH

export CLASSPATH

/usr/java/jdk1.6.0_16 is the folder of the jdk. You should change it ,if you don’t install jdk in this folder.

l Solr setup

1.Download solr (apache-solr-1.3.0.zip ) from this website:

http://ftp.kddilabs.jp/infosystems/apache/lucene/solr/

2.Install solr with following steps

#unzip -q apache-solr-1.3.0.zip
#cd apache-solr-1.3.0/example/
# java -jar start.jar
           we can see that the Solr is running by loading http://localhost:8983/solr/admin/ in web browser. This is the main starting point for Administering Solr.

This is tutorial of solr http://lucene.apache.org/solr/tutorial.html.

2.Search Apach solr with php.

This is a tutorial of php solr client example:

http://www.ibm.com/developerworks/opensource/library/os-php-apachesolr/

We use PHP Solr Client to access to solr server . Download PHP Solr Client from this website: http://code.google.com/p/solr-php-client/downloads/list

l Change default Solr index data schema.

Solr index data schema is in the folder of “apache-solr-1.3.0/example/solr/conf/ schema.xml”

This is the snippet of solr schema.

<schema name="example" version="1.1">
 ...
 <fields>
 <field name="id" type="string" indexed="true" stored="true" required="true" />
   <field name="sku" type="textTight" indexed="true" stored="true" omitNorms="true"/>
   <field name="name" type="text" indexed="true" stored="true"/>
 ...
 </fields>
 <uniqueKey>id</uniqueKey>
 ...
 <defaultSearchField>text</defaultSearchField>
 ...
</schema>

Edit the field element , change it as below:

product_name

To make this change active ,we have to restart Solr server as command like this:

#java -jar start.jar

l Create index by PHP

using php solr client , we can access to Solr easily.This is an example fo how to create an index by php.

<?php

require_once ‘Apache/Solr/Service.php’;

//10.60.0.111 is solr service ip.

$solr=new Apache_Solr_Service(‘10.60.0.111’,’8983’,’/solr’);

if (!$solr->ping())

{

echo(“service not responding”);

}

else

{

echo(“solr Service is available
“);

}

$parts=array(

‘1’=>array(

‘id’=>’a123’,

‘product_name’=>’garoon，test’

‘2’=>array(

‘id’=>’a456’,

‘product_name’=>’share360,test’

)

);

$documents = array();

foreach ( $parts as $item => $fields ) {

$part = new Apache_Solr_Document();

foreach ( $fields as $key => $value ) {

if ( is_array( $value ) ) {

foreach ( $value as $datum ) {

$part->setMultiValue( $key, $datum );

}

else {

$part->$key = $value;

}

$documents[] = $part;

}

try {

$solr->addDocuments( $documents );

$solr->commit();

$solr->optimize();

}

catch ( Exception $e ) {

echo $e->getMessage();

}

l Search index by PHP .

This is an example of searching index by php

<?php

require_once ‘Apache/Solr/Service.php’;

$solr=new Apache_Solr_Service(‘10.60.0.111’,’8983’,’/solr’);

if (!$solr->ping())

{

echo(“service not responding”);

}

else

{

echo(“sucess”);

}

$offset = 0;

$limit = 10;

$query=”garoon”;

$response=$solr->search($query,$offset,$limit);

if ($response->getHttpStatus()==200)

{

if ( $response->response->numFound > 0 ) {

echo “$query
“;

foreach ( $response->response->docs as $doc )

{

echo “id: “.$doc->id.”product_name “.$doc->product_name. “—“;

echo ‘
‘;

}

echo ‘
‘;

}

else {

echo $response->getHttpStatusMessage();

}

l delete index by PHP

<?php

require_once ‘Apache/Solr/Service.php’;

//10.60.0.111 is solr service ip.

$solr=new Apache_Solr_Service(‘10.60.0.111’,’8983’,’/solr’);

if (!$solr->ping())

{

echo(“service not responding
“);

}

else

{

echo(“solr Service is available
“);

}

$response=$solr->deleteById(“a123”);

echo($response->getHttpStatusMessage());

l update index by PHP

If we want to update a document to index , there are two methods to resolve it :

Method 1: delete the document by id, and then add an new one to index.

Method 2: use the add method to directly add the document to index , because id is an indentify field, Solr server will use new document to cover the old one.

如何使Solr支持中文，日文和英文的全文搜索呢。apache提供提供了一个 cjk库函数供我们使用，具体使用参考：http://chaifeng.com/blog/2008/01/\_apache\_solr.html

默认情况下 Apache Solr 是不支持中文检索的，如果文档中包含中文，必须用完整的一句中文才能检索出内容。
下面以 Apache Solr 的演示程序为例，注意：粗体部分是需要修改的地方。
找到如下三行：

修改为：

找到如下两行：

修改为：

修改完毕，重新运行 Apache Solr 就可以对中文进行检索了，原先已经导入的文档需要重新导入。
记住原先的配置中有个 positionIncrementGap=”100” 一定要删除了，否则会有异常。

注意：如果是php编程，一定要让程序代码的编码格式为utf-8编码形式，不然创建索引会失败。