Examples of RegexExtract

org.apache.pig.piggybank.evaluation.string.RegexExtract

Syntax:

String RegexExtract(String expression, String regex, int match_index).

Input:

expression-source string.

regex-regular expression.

match_index-index of the group to extract.

Output:

extracted group, if fail, return null.

Examples of org.apache.pig.piggybank.evaluation.string.RegexExtract

        t3.set(0, null);
        t3.set(1, "^\\/search\\/iy\\/(.*?)\\/.*");
        t3.set(2, 2);


        
        RegexExtract func = new RegexExtract();
        String r = func.exec(t1);
        assertTrue(r.equals("term1"));
        r = func.exec(t2);
        assertTrue(r==null);
        r = func.exec(t3);
        assertTrue(r==null);
    }

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Examples of org.apache.pig.piggybank.evaluation.string.RegexExtract

        t3.set(0, null);
        t3.set(1, "^\\/search\\/iy\\/(.*?)\\/.*");
        t3.set(2, 2);


        
        RegexExtract func = new RegexExtract();
        String r = func.exec(t1);
        assertTrue(r.equals("term1"));
        r = func.exec(t2);
        assertTrue(r==null);
        r = func.exec(t3);
        assertTrue(r==null);
    }

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