Re: help for preprocessing the query
On Mon, May 12, 2008 at 10:30 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: You'll *not* write a servlet. You'll write implement the Filter interface http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/Filter.html In the doFilter method, you'll create a ServletRequestWrapper which changes the incoming param. Then you'll call chain.doFilter with the new request object. You'll need to add this filter before the SolrRequestFilter in Solr's web.xml I created a CustomFilter that would dump the request contents to a file, I created the jar and added it to the solr.war in WEB_INF/lib folder I edited the web.xml in the same folder to include the following lines: filter filter-nameCustomFilter/filter-name filter-class(packagename).CustomFilter/filter-class /filter where CustomFilter is the name of the class extending javax.servlet.Filter. I don't see anything in the contents of the file.. thanks for your help -umar Look at http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html?page=1for more details. On Mon, May 12, 2008 at 8:51 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 8:42 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. sorry for the silly question, basically i am new to servlets. Now If my understanding is right , I will need to create a servlet/wrapper that would listen the user facing queries and then pass the processed text to solr request handler and I need to pack this servlet class file into Solr war file. But How would I ensure that my servlet is called instead of solr request handler? On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar.
Re: help for preprocessing the query
Did you put a filter-mapping in web.xml? On Tue, May 13, 2008 at 4:20 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 10:30 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: You'll *not* write a servlet. You'll write implement the Filter interface http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/Filter.html In the doFilter method, you'll create a ServletRequestWrapper which changes the incoming param. Then you'll call chain.doFilter with the new request object. You'll need to add this filter before the SolrRequestFilter in Solr's web.xml I created a CustomFilter that would dump the request contents to a file, I created the jar and added it to the solr.war in WEB_INF/lib folder I edited the web.xml in the same folder to include the following lines: filter filter-nameCustomFilter/filter-name filter-class(packagename).CustomFilter/filter-class /filter where CustomFilter is the name of the class extending javax.servlet.Filter. I don't see anything in the contents of the file.. thanks for your help -umar Look at http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html?page=1for more details. On Mon, May 12, 2008 at 8:51 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 8:42 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. sorry for the silly question, basically i am new to servlets. Now If my understanding is right , I will need to create a servlet/wrapper that would listen the user facing queries and then pass the processed text to solr request handler and I need to pack this servlet class file into Solr war file. But How would I ensure that my servlet is called instead of solr request handler? On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar.
Re: help for preprocessing the query
On Tue, May 13, 2008 at 4:39 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: Did you put a filter-mapping in web.xml? no, I just did that and it seems to be working... what is filter-mapping required for? On Tue, May 13, 2008 at 4:20 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 10:30 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: You'll *not* write a servlet. You'll write implement the Filter interface http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/Filter.html In the doFilter method, you'll create a ServletRequestWrapper which changes the incoming param. Then you'll call chain.doFilter with the new request object. You'll need to add this filter before the SolrRequestFilter in Solr's web.xml I created a CustomFilter that would dump the request contents to a file, I created the jar and added it to the solr.war in WEB_INF/lib folder I edited the web.xml in the same folder to include the following lines: filter filter-nameCustomFilter/filter-name filter-class(packagename).CustomFilter/filter-class /filter where CustomFilter is the name of the class extending javax.servlet.Filter. I don't see anything in the contents of the file.. thanks for your help -umar Look at http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html?page=1for more details. On Mon, May 12, 2008 at 8:51 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 8:42 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. sorry for the silly question, basically i am new to servlets. Now If my understanding is right , I will need to create a servlet/wrapper that would listen the user facing queries and then pass the processed text to solr request handler and I need to pack this servlet class file into Solr war file. But How would I ensure that my servlet is called instead of solr request handler? On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar.
Re: help for preprocessing the query
http://java.sun.com/products/servlet/Filters.html this is a servlet container feature BTW , this may not be a right forum for this topic. --Noble On Tue, May 13, 2008 at 5:04 PM, Umar Shah [EMAIL PROTECTED] wrote: On Tue, May 13, 2008 at 4:39 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: Did you put a filter-mapping in web.xml? no, I just did that and it seems to be working... what is filter-mapping required for? On Tue, May 13, 2008 at 4:20 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 10:30 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: You'll *not* write a servlet. You'll write implement the Filter interface http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/Filter.html In the doFilter method, you'll create a ServletRequestWrapper which changes the incoming param. Then you'll call chain.doFilter with the new request object. You'll need to add this filter before the SolrRequestFilter in Solr's web.xml I created a CustomFilter that would dump the request contents to a file, I created the jar and added it to the solr.war in WEB_INF/lib folder I edited the web.xml in the same folder to include the following lines: filter filter-nameCustomFilter/filter-name filter-class(packagename).CustomFilter/filter-class /filter where CustomFilter is the name of the class extending javax.servlet.Filter. I don't see anything in the contents of the file.. thanks for your help -umar Look at http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html?page=1for more details. On Mon, May 12, 2008 at 8:51 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 8:42 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. sorry for the silly question, basically i am new to servlets. Now If my understanding is right , I will need to create a servlet/wrapper that would listen the user facing queries and then pass the processed text to solr request handler and I need to pack this servlet class file into Solr war file. But How would I ensure that my servlet is called instead of solr request handler? On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar. -- --Noble Paul
Re: help for preprocessing the query
Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar
Re: help for preprocessing the query
On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar
Re: help for preprocessing the query
ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar.
Re: help for preprocessing the query
On Mon, May 12, 2008 at 8:42 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. sorry for the silly question, basically i am new to servlets. Now If my understanding is right , I will need to create a servlet/wrapper that would listen the user facing queries and then pass the processed text to solr request handler and I need to pack this servlet class file into Solr war file. But How would I ensure that my servlet is called instead of solr request handler? On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar.
Re: help for preprocessing the query
Shalin Shekhar Mangar write: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. Right. Koji
Re: help for preprocessing the query
I haven't written one, but I _think_ you could just implement a QParser that does the transformation. See the LuceneQParser or the DismaxQParser. On May 12, 2008, at 4:59 AM, Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar
Re: help for preprocessing the query
You'll *not* write a servlet. You'll write implement the Filter interface http://java.sun.com/j2ee/sdk_1.3/techdocs/api/javax/servlet/Filter.html In the doFilter method, you'll create a ServletRequestWrapper which changes the incoming param. Then you'll call chain.doFilter with the new request object. You'll need to add this filter before the SolrRequestFilter in Solr's web.xml Look at http://www.onjava.com/pub/a/onjava/2001/05/10/servlet_filters.html?page=1for more details. On Mon, May 12, 2008 at 8:51 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 8:42 PM, Shalin Shekhar Mangar [EMAIL PROTECTED] wrote: ServletRequest and ServletRequestWrapper are part of the Java servlet-api (not Solr). Basically, Koji is hinting at writing a ServletFilter implementation (again using servlet-api) and creating a wrapper ServletRequest which modifies the underlying request params which can then be used by Solr. sorry for the silly question, basically i am new to servlets. Now If my understanding is right , I will need to create a servlet/wrapper that would listen the user facing queries and then pass the processed text to solr request handler and I need to pack this servlet class file into Solr war file. But How would I ensure that my servlet is called instead of solr request handler? On Mon, May 12, 2008 at 8:36 PM, Umar Shah [EMAIL PROTECTED] wrote: On Mon, May 12, 2008 at 2:50 PM, Koji Sekiguchi [EMAIL PROTECTED] wrote: Hi Umar, You may be able to preprocess your request parameter in your servlet filter. In the doFilter() method, you do: ServletRequest myRequest = new MyServletRequestWrapper( request ); Thanks for your response, Where is the ServletRequest class , I am using Solr 1.3 trunk code found SolrServletm, butit is depricated, which class can I use instead of SolrRequest in 1.3 codebase? I also tried overloading Standard request handler , How do I re write queryparams there? Can you point me to some documentation? : chain.doFilter( myRequest, response ); And you have MyServletRequestWrapper that extends ServletRequestWrapper. Then you can get|set q* parameters through getParameter() method. Hope this helps, Koji Umar Shah wrote: Hi, Due some requirement I need to transform the user queries before passing it to the standard handler in Solr, can anyone suggest me the best way to do this. I will need to use a transfomation class that would provide functions to process the input query 'qIn' and transform it to the resultant query 'qOut' and then pass it to solr handler as if qOut were the original user query. thanks in anticipation, -umar -- Regards, Shalin Shekhar Mangar. -- Regards, Shalin Shekhar Mangar.
