Package uk.ac.starlink.ttools.task
Class MultiOutputTask
- java.lang.Object
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- uk.ac.starlink.ttools.task.MultiOutputTask
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- All Implemented Interfaces:
uk.ac.starlink.task.Task
- Direct Known Subclasses:
TableMultiCopy
public abstract class MultiOutputTask extends java.lang.Object implements uk.ac.starlink.task.Task
Task which writes multiple tables to a single output file. Concrete subclasses must implement thecreateTableSequence(uk.ac.starlink.task.Environment)
method.- Since:
- 6 Jul 2010
- Author:
- Mark Taylor
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Constructor Summary
Constructors Modifier Constructor Description protected
MultiOutputTask(java.lang.String purpose)
Constructor.
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Method Summary
All Methods Static Methods Instance Methods Abstract Methods Concrete Methods Modifier and Type Method Description uk.ac.starlink.task.Executable
createExecutable(uk.ac.starlink.task.Environment env)
protected abstract uk.ac.starlink.table.TableSequence
createTableSequence(uk.ac.starlink.task.Environment env)
Interrogates the environment to produce a sequence of tables which will be written as the output of this task.static uk.ac.starlink.table.TableSequence
createTableSequence(InputTableSpec[] inSpecs)
Constructs a table sequence based on an array of input table specifications.protected java.util.List<uk.ac.starlink.task.Parameter>
getParameterList()
Returns the parameter list for this task; it may be modified.uk.ac.starlink.task.Parameter[]
getParameters()
java.lang.String
getPurpose()
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Method Detail
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getPurpose
public java.lang.String getPurpose()
- Specified by:
getPurpose
in interfaceuk.ac.starlink.task.Task
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getParameters
public uk.ac.starlink.task.Parameter[] getParameters()
- Specified by:
getParameters
in interfaceuk.ac.starlink.task.Task
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getParameterList
protected java.util.List<uk.ac.starlink.task.Parameter> getParameterList()
Returns the parameter list for this task; it may be modified.- Returns:
- parameter list
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createTableSequence
protected abstract uk.ac.starlink.table.TableSequence createTableSequence(uk.ac.starlink.task.Environment env) throws uk.ac.starlink.task.TaskException
Interrogates the environment to produce a sequence of tables which will be written as the output of this task.- Parameters:
env
- execution environment- Returns:
- sequence of tables to write
- Throws:
uk.ac.starlink.task.TaskException
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createExecutable
public uk.ac.starlink.task.Executable createExecutable(uk.ac.starlink.task.Environment env) throws uk.ac.starlink.task.TaskException
- Specified by:
createExecutable
in interfaceuk.ac.starlink.task.Task
- Throws:
uk.ac.starlink.task.TaskException
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createTableSequence
public static uk.ac.starlink.table.TableSequence createTableSequence(InputTableSpec[] inSpecs) throws uk.ac.starlink.task.TaskException
Constructs a table sequence based on an array of input table specifications.- Parameters:
inSpecs
- array of input tables- Throws:
uk.ac.starlink.task.TaskException
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