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Guylaine BASSETTE

Guylaine BASSETTE

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Extract regex groups: If there is one or more groups in the regular expression and this option is enabled, then the value of the groups will be set in the destination metadata. If it is not checked, the complete match is stored in the destination metadata. The groups of a regular expression are defined between ( and ). For example, this regular expression has one group: word1 (.*?) word2. In this regular expression, we are searching for the part of a text starting with word1and ending with word2. Let's take this text: My word1 titi tata toto word2 and other words. With the chosen regular expression mentioned above, if the checkbox is enabled, then the destination metadata = gets the value "titi tata toto". OtherwiseIf the checkbox is not enabled, the destination metadata = gets the value "word1 titi tata toto word2". With Now, if we change a little the regex to have several groups, the values will be added separated with space. For example, with this regexfor example: word1 (.?) tata (.?) word2, . the result is: destination metadata = "titi toto". “titi” and “toto” are extracted and set in destination metadata separated by a space. This field is optional.

With several groups, the values will be added separated with space.

Note

  • The source metadata must be “content”, “url” or any ManifoldCF document field provided by your Repository Connector.

  • The destination metadata must exist in Solr environment (no check done).

  • Depending on your regular expression, several different values may be found in a document, so the metadata receiving the results must be multi-valued, otherwise it will contain the last match found.

  • If the checkbox “Keep only one value” is set to true or if “Value if true” is specified, then only one value will be used.

  • This connector processes a file line by line: a line is defined by a end of line character or limited to a capacity of 65536 bytes.

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But if you want to extract only the department of <part1>, this is not possible with the Regex Entity Connector as it processes a file line by line. The file above presents several lines (i.e. with return characters). The regex to extract department of <part1> could have been: <part1>\s<department>(.*?)</department>. Even with \s is used to take into account the return character expected in the regex with \s can’t help, because to the line. But as the connector reads only one line by line, so a return character after <part1> means that only <part1> will be read when the regex is applied.

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