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NIFI-1078: Fixed typo in docs and added additional examples

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Mark Payne 2016-01-28 09:35:05 -05:00
parent 23364f554c
commit 8a9a44c102
1 changed files with 14 additions and 2 deletions
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nifi-docs/src/main/asciidoc/expression-language-guide.adoc
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@ -1383,9 +1383,21 @@ chaining together the two functions: `${date:toDate('MM-dd-yyyy'):format('yyyy/M
Date type representing that time. Since whole Expression Language expressions can only return Strings it would formatted as Date type representing that time. Since whole Expression Language expressions can only return Strings it would formatted as
`Wed Dec 31 15:36:03 EST 2014` when the expression completes. `Wed Dec 31 15:36:03 EST 2014` when the expression completes.
The utilizing the <<toNumber>> method, `now` can provide the current date and time as the number of milliseconds since Utilizing the <<toNumber>> method, `now` can provide the current date and time as the number of milliseconds since
Midnight GMT on January 1, 1970. For instance, if instead of executing `${now()}` in the previous example `${now():toNumber()}` Midnight GMT on January 1, 1970. For instance, if instead of executing `${now()}` in the previous example `${now():toNumber()}`
was run then it would output `1453843201123`. This way preserves the millisecond field. was run then it would output `1453843201123`. This method provides millisecond-level precision and provides the ability to
manipulate the value.
.now Examples
|==================================================================================================================
| Expression | Value
| `${now()}` | A Date type representing the current date and time to the nearest millisecond
| `${now():toNumber()}` | The number of milliseconds since midnight GMT Jan 1, 1970 (`1453843201123`, for example)
| `${now():toNumber():minus(86400000)` | A number presenting the time 24 hours ago
| `${now():format('yyyy')}` | The current year
| `${now():toNumber():minus(86400000):format('E')}` | The day of the week that was yesterday,
as a 3-letter abbreviation (For example, `Wed`)
|==================================================================================================================