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https://issues.apache.org/jira/browse/TINKERPOP-2672?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Yang Xia closed TINKERPOP-2672.
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Fix Version/s: 3.7.1
Resolution: Implemented
> Add String Manipulation Steps to Gremlin
> ----------------------------------------
>
> Key: TINKERPOP-2672
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2672
> Project: TinkerPop
> Issue Type: Improvement
> Components: language
> Reporter: Dave Bechberger
> Assignee: Yang Xia
> Priority: Major
> Fix For: 3.7.1
>
>
> Today Gremlin requires that users fall back to closures to handle many common
> string manipulation options that users want to do on data in the graph. This
> is a problem for many users as many of the providers prevent the use of
> closures due to the security risks so for these users there is no way to
> manipulate strings directly.
> The proposal here is to add a set of steps to handle common string
> manipulation requests from users including:
> * `concat(String)` - concatenates the String to the value of the traverser
> * 'length()` - returns the length of the string
> * `split(String)` - returns an array of strings based on the split char
> passed in
> * `substring(beginIndex, endIndex)` - returns a substring based on the start
> and end index values passed in
> * `substring(beginIndex)` - returns a substring beginning at the start index
> * `rtrim()` - remove spaces at the beginning of a string
> * `ltrim()` - remove spaces at the end of a string
> * `trim()` - remove spaces at the beginning and end of a string
> * `replace(old, new)` - replaces all occurences of the `old` string with the
> `new` string
> * `reverse()` - reverses the string
> * `tostring()` - turns the incoming item into a string
> * `toupper()` - upper cases the incoming string
> * `tolower()` - lower cases the incoming string
>
> All the above functions except `tostring()` will throw an error if a
> non-string value is passed in
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