Gentlemen:
I am using Lucene as search engine for the below requirement: Millions of documents (text files) are there. Each text file has thousands of words (plain Strings with space separated). Example content of a text file 1 (just showing few words): 0001AAA 0001AAB 0001AAC 0061000 PSBP06 MFBP05 ... Example content of a text file 2 (just showing few words): 0001AAX 0001AAB 0001AAN 0061002 PSBP07 MFBP06 ... Then there are millions of rules captured in the database. For easy understanding, I specify couple of rules below: Rule 1: CONDITION 1: WITH: 0001AAA OR 0001AAC CONDITION 2: WITH: PSBP06 OR PSBP07 CONDITION 3: WITH: MFBP05 Rule 2: CONDITION 1: WITH: 0001AAN OR 0001AAC CONDITION 2: WITH: PSBP06 CONDITION 3: WITH: PSBP08 CONDITION 4: NOT WITH: MFBP05 Requirement is, for a given rule, find the text files matching at least one word in each condition of the rule I indexed the contents of each text file as a Lucene document with a Field "FileContents" and another field to just store the file name So, for the Rule 1, I constructed query as (0001AAA OR 0001AAC) AND (PSBP06 OR PSBP07) AND (MFBP05) And for Rule 2, the query is (0001AAN OR 0001AAC) AND (PSBP06) AND (PSBP08) AND NOT (MFBP05). Queries are working and able to find the appropriate text files. Now, I have another requirement which is reverse of above requirement. i.e., For the given text file, I need to find the list of Rules that can match. Example: For the text file 1, the "Rule 1" should match, because the text file 1 has 0001AAA which satisfies condition 1, PSBP06 will satisfies condition 2, MFBP05 will satisfy condition 3. Rule 1 has 3 conditions and at least one word in each condition matches for text file 1. So Rule 1 is good for text file 1. Rule 2 should not match for text file 1 because PSBP08 is not there in it. I don't know whether i can index the "Rule" information in Lucene. A rule can have 1 or more conditions, so I can't use fixed number of Fields to query on. Even if there are fixed number of fields, the query has to check for each field to match at least one word. Is it possible to handle this requirement using Lucene? or should I go for other options? I am new to Lucene, any help would be appreciated. Thanks, Kart
