Package uk.ac.starlink.ttools.example
Class PostgresAsciiStarTable
java.lang.Object
uk.ac.starlink.table.AbstractStarTable
uk.ac.starlink.table.formats.StreamStarTable
uk.ac.starlink.ttools.example.PostgresAsciiStarTable
- All Implemented Interfaces:
Closeable
,AutoCloseable
,uk.ac.starlink.table.StarTable
public class PostgresAsciiStarTable
extends uk.ac.starlink.table.formats.StreamStarTable
StarTable implementation which reads data from a pipe-separated-value
file. This is modelled on the ASCII form of the 2MASS catalogues
as distributed on the 2MASS catalogue DVD set, which claims to be
easy to ingest into PostgreSQL 7.3.2
(see ftp://ftp.ipac.caltech.edu/pub/2mass/allsky/
- Since:
- 12 Sep 2006
- Author:
- Mark Taylor
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Field Summary
Fields inherited from class uk.ac.starlink.table.formats.StreamStarTable
END
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Constructor Summary
ConstructorsConstructorDescriptionPostgresAsciiStarTable
(uk.ac.starlink.util.DataSource datsrc, URL schemaUrl) Constructor. -
Method Summary
Modifier and TypeMethodDescriptionprotected uk.ac.starlink.table.formats.RowEvaluator.Metadata
Obtains metadata for the table by reading the schema provided at construction time.protected uk.ac.starlink.table.formats.RowEvaluator.Metadata
Given a PostgreSQL/2MASS-type schema file, works out what the column metadata will look like for each column of the table.Methods inherited from class uk.ac.starlink.table.formats.StreamStarTable
getColumnCount, getColumnInfo, getInputStream, getRowCount, getRowSequence, init
Methods inherited from class uk.ac.starlink.table.AbstractStarTable
checkedLongToInt, close, getCell, getColumnAuxDataInfos, getName, getParameters, getRow, getRowAccess, getRowSplittable, getURL, isRandom, setName, setParameters, setURL
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface uk.ac.starlink.table.StarTable
getParameterByName, setParameter
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Constructor Details
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PostgresAsciiStarTable
public PostgresAsciiStarTable(uk.ac.starlink.util.DataSource datsrc, URL schemaUrl) throws IOException Constructor.- Parameters:
datsrc
- input data sourceschemaUrl
- URL for 'schema' document which describes data types (like twomass_psc_schema)- Throws:
IOException
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Method Details
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readRow
protected List<String> readRow(PushbackInputStream in) throws uk.ac.starlink.table.TableFormatException, IOException - Specified by:
readRow
in classuk.ac.starlink.table.formats.StreamStarTable
- Throws:
uk.ac.starlink.table.TableFormatException
IOException
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obtainMetadata
Obtains metadata for the table by reading the schema provided at construction time.- Specified by:
obtainMetadata
in classuk.ac.starlink.table.formats.StreamStarTable
- Throws:
IOException
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readSchema
protected uk.ac.starlink.table.formats.RowEvaluator.Metadata readSchema(InputStream in) throws IOException Given a PostgreSQL/2MASS-type schema file, works out what the column metadata will look like for each column of the table.- Parameters:
in
- input stream for schema file- Returns:
- metadata object
- Throws:
IOException
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