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From "ASF GitHub Bot (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (METAMODEL-136) LIKE operator not supported in MongoDB module
Date Tue, 28 Apr 2015 15:25:07 GMT

    [ https://issues.apache.org/jira/browse/METAMODEL-136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14517196#comment-14517196
] 

ASF GitHub Bot commented on METAMODEL-136:
------------------------------------------

Github user kaspersorensen commented on a diff in the pull request:

    https://github.com/apache/metamodel/pull/21#discussion_r29253869
  
    --- Diff: mongodb/src/main/java/org/apache/metamodel/mongodb/MongoDbDataContext.java ---
    @@ -435,6 +441,19 @@ private String getOperatorName(FilterItem item) {
             return operatorName;
         }
     
    +    private Pattern turnOperandIntoRegExp(Object operand) {
    +        String operandAsString = operand.toString();
    +        StringBuilder operandAsRegExp = new StringBuilder(replaceWildCardLikeChars(operandAsString));
    +        if (!operandAsString.startsWith("%") && operandAsString.contains("%"))
{
    +            operandAsRegExp = operandAsRegExp.insert(0, "^");
    +        }
    +        return Pattern.compile(operandAsRegExp.toString(), Pattern.CASE_INSENSITIVE);
    +    }
    +
    +    private String replaceWildCardLikeChars(String operand) {
    +        return operand.replace("%","");
    --- End diff --
    
    I think we also need to cater to cases like ```WHERE name LIKE '% Alberto % Stratio %'```


> LIKE operator not supported in MongoDB module
> ---------------------------------------------
>
>                 Key: METAMODEL-136
>                 URL: https://issues.apache.org/jira/browse/METAMODEL-136
>             Project: Apache MetaModel
>          Issue Type: Bug
>    Affects Versions: 4.3.2
>            Reporter: Alberto
>
> The LIKE operator has not been included in the list of available operators.



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