Difference between revisions of "Coverage Processor for Points"
From Earth Science Information Partners (ESIP)
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{{WCS Glossary | {{WCS Glossary | ||
|TermDesc=Executes the GetCoverage query by performing desired SQL query | |TermDesc=Executes the GetCoverage query by performing desired SQL query | ||
| + | |ExampleURL=http://128.252.202.19:8080/CIRA?service=WCS&version=1.1.2&Request=GetCoverage&identifier=VIEWS&RangeSubset=SO4f&BoundingBox=-130,24,-65,52,urn:ogc:def:crs:OGC:2:84&TimeSequence=2004-08-01&format=text/csv&store=true | ||
}} | }} | ||
The Coverage Processor for points is a component that performs three different activities: | The Coverage Processor for points is a component that performs three different activities: | ||
| − | * WCS Query Parser. The syntax is checked and | + | * WCS Query Parser. The syntax is checked and parsed into structured object. |
* SQL Query Compiler. | * SQL Query Compiler. | ||
** Fields: | ** Fields: | ||
| Line 11: | Line 12: | ||
*** join in location table | *** join in location table | ||
*** join in tables for fields | *** join in tables for fields | ||
| − | ** | + | ** Filters: |
| − | *** Add | + | *** Bounding Box: Add SQL filter by location lat and lon. |
| − | *** Time: Add filter by | + | *** Time: Add SQL filter by datetime. |
| − | *** location: if requested, add filter by location | + | *** location: if requested, add SQL filter by location |
* Formatter. The table data is returned in desired format. Currently the only supported is CSV, Comma Separated Values. | * Formatter. The table data is returned in desired format. Currently the only supported is CSV, Comma Separated Values. | ||
Revision as of 14:18, September 2, 2010
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Coverage_Processor_for_Points Description: Executes the GetCoverage query by performing desired SQL query
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Term Details
The Coverage Processor for points is a component that performs three different activities:
- WCS Query Parser. The syntax is checked and parsed into structured object.
- SQL Query Compiler.
- Fields:
- Select required fields
- join in location table
- join in tables for fields
- Filters:
- Bounding Box: Add SQL filter by location lat and lon.
- Time: Add SQL filter by datetime.
- location: if requested, add SQL filter by location
- Fields:
- Formatter. The table data is returned in desired format. Currently the only supported is CSV, Comma Separated Values.
SQL processors can be either configured to supported DB schema types, or custom written for esoteric databases.
By writing a custom processor, anything can be used as a data source.
