mirror of https://github.com/apache/lucene.git
61 lines
1.9 KiB
JavaScript
61 lines
1.9 KiB
JavaScript
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//
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// JavaScript Lucene Query Validator
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// Author: Kelvin Tan (kelvin@relevanz.com)
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// Date: 10/04/2002
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// validates a lucene query.
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// @param Form field that contains the query
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function doCheckLuceneQuery(queryField)
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{
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var query = queryField.value;
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if(query != null && query.length > 0)
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{
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var matches = query.match(/^(\*)|([^a-zA-Z0-9_]\*)/);
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// check wildcards are used properly
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if(matches != null && matches.length > 0)
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{
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alert("Invalid search query! The wildcard (*) character must be preceded by at least one alphabet or number. Please try again.")
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return false;
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}
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// check parentheses are used properly
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matches = query.match(/^([^\n()]*|(\(([a-zA-Z0-9_+\-:()\" ]|\*)+\)))*$/);
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if(matches == null || matches.length == 0)
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{
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alert("Invalid search query! Parentheses must contain at least one alphabet or number. Please try again.")
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return false;
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}
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// check '+' and '-' are used properly
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matches = query.match(/^(([^\n+-]*|[+-]([a-zA-Z0-9_:()]|\*)+))*$/);
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if(matches == null || matches.length == 0)
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{
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alert("Invalid search query! '+' and '-' modifiers must be followed by at least one alphabet or number. Please try again.")
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return false;
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}
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// check that quote marks are closed
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matches = query.match(/\"/g);
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if(matches != null)
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{
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var number = matches.length;
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if((number % 2) > 0)
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{
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alert("Invalid search query! Please close all quote (\") marks.");
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return false;
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}
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}
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// check ':' is used properly
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matches = query.match(/^(([^\n:]*|([a-zA-Z0-9_]|\*)+[:]([a-zA-Z0-9_()"]|\*)+))*$/);
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if(matches == null || matches.length == 0)
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{
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alert("Invalid search query! Field declarations (:) must be preceded by at least one alphabet or number and followed by at least one alphabet or number. Please try again.")
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return false;
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}
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return true;
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}
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}
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