Package uk.ac.starlink.table.formats
Class RowEvaluator
- java.lang.Object
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- uk.ac.starlink.table.formats.RowEvaluator
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public class RowEvaluator extends java.lang.Object
Examines unknown rows (arrays of strings) to work out what they contain. By repeatedly callingsubmitRow(java.util.List)
the evaluator can refine its idea of what kind of data is represented by each column.- Since:
- 21 Sep 2004
- Author:
- Mark Taylor (Starlink)
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
RowEvaluator.Decoder
Interface for an object that can turn a string into a cell content object.static class
RowEvaluator.Metadata
Helper class used to group quantities which describe what the data types found in the columns of a table are.
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Field Summary
Fields Modifier and Type Field Description static java.util.regex.Pattern
ISO8601_REGEX
Regular expression for ISO 8601 dates.
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Constructor Summary
Constructors Constructor Description RowEvaluator()
Constructs a new RowEvaluator which will work out the number of columns from the data.RowEvaluator(int ncol)
Constructs a new RowEvaluator which will examine rows with a fixed number of columns.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description RowEvaluator.Metadata
getMetadata()
Returns information gleaned from previous submitRow calls about the kind of data that appears to be in the columns.void
submitRow(java.util.List row)
Looks at a given row (list of strings) and records information about what sort of things it looks like it contains.
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Constructor Detail
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RowEvaluator
public RowEvaluator()
Constructs a new RowEvaluator which will work out the number of columns from the data.
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RowEvaluator
public RowEvaluator(int ncol)
Constructs a new RowEvaluator which will examine rows with a fixed number of columns.- Parameters:
ncol
- column count
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Method Detail
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submitRow
public void submitRow(java.util.List row) throws TableFormatException
Looks at a given row (list of strings) and records information about what sort of things it looks like it contains.- Parameters:
row
- ncol-element list of strings- Throws:
TableFormatException
- if the number of elements in row is not the same as on the first call
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getMetadata
public RowEvaluator.Metadata getMetadata()
Returns information gleaned from previous submitRow calls about the kind of data that appears to be in the columns.- Returns:
- metadata
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