java.lang.Object
- uk.ac.starlink.table.AbstractStarTable
- - uk.ac.starlink.table.MetadataStarTable

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, StarTable
```
public class MetadataStarTable
extends AbstractStarTable
```
Utility StarTable implementation which contains only metadata, no data. Suitable for passing to TableSink.acceptMetadata(uk.ac.starlink.table.StarTable).

Since:

14 Oct 2011

Author:

Mark Taylor

Constructor Summary

Constructors
Constructor	Description
`MetadataStarTable(ColumnInfo[] colInfos)`	Constructs a metadata table with given column metadata and an indeterminate number of rows.
`MetadataStarTable(ColumnInfo[] colInfos, long rowCount)`	Constructs a metadata table with given column metadata and a given number of rows.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getColumnCount()`	Returns the number of columns in this table.
`ColumnInfo`	`getColumnInfo(int icol)`	Returns the object describing the data in a given column.
`RowAccess`	`getRowAccess()`	Returns an object which can provide random access to this table's data, if random access is implemented.
`long`	`getRowCount()`	Returns the number of rows in this table, if known.
`RowSequence`	`getRowSequence()`	Returns an object which can iterate over all the rows in the table sequentially.
`RowSplittable`	`getRowSplittable()`	Returns a default splittable which relies on table random access if available, or otherwise provides only sequential access (no splits).

Methods inherited from class uk.ac.starlink.table.AbstractStarTable
checkedLongToInt, close, getCell, getColumnAuxDataInfos, getName, getParameters, getRow, 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

- Constructor Detail
  - MetadataStarTable
```
public MetadataStarTable(ColumnInfo[] colInfos)
```
    Constructs a metadata table with given column metadata and an indeterminate number of rows.
    
    Parameters:
    
    colInfos - metadata items for each column
  - MetadataStarTable
```
public MetadataStarTable(ColumnInfo[] colInfos,
                         long rowCount)
```
    Constructs a metadata table with given column metadata and a given number of rows.
    
    Parameters:
    
    colInfos - metadata items for each column
    
    rowCount - row count, may be -1 to indicate unknown
- Method Detail
  - getColumnInfo
```
public ColumnInfo getColumnInfo(int icol)
```
    Description copied from interface: StarTable
    
    Returns the object describing the data in a given column.
    
    Specified by:
    
    getColumnInfo in interface StarTable
    
    Specified by:
    
    getColumnInfo in class AbstractStarTable
    
    Parameters:
    
    icol - the column for which header information is required
    
    Returns:
    
    a ValueInfo object for column icol
  - getColumnCount
```
public int getColumnCount()
```
    Description copied from interface: StarTable
    
    Returns the number of columns in this table.
    
    Specified by:
    
    getColumnCount in interface StarTable
    
    Specified by:
    
    getColumnCount in class AbstractStarTable
    
    Returns:
    
    the number of columns
  - getRowSequence
```
public RowSequence getRowSequence()
```
    Description copied from interface: StarTable
    
    Returns an object which can iterate over all the rows in the table sequentially. Each such returned object is safe for use within a single thread, but not in general from multiple threads concurrently.
    
    Specified by:
    
    getRowSequence in interface StarTable
    
    Specified by:
    
    getRowSequence in class AbstractStarTable
    
    Returns:
    
    new RowSequence
  - getRowAccess
```
public RowAccess getRowAccess()
```
    Description copied from interface: StarTable
    
    Returns an object which can provide random access to this table's data, if random access is implemented. Each such returned object is safe for use within a single thread, but not in general from multiple threads concurrently.
    
    Specified by:
    
    getRowAccess in interface StarTable
    
    Overrides:
    
    getRowAccess in class AbstractStarTable
    
    Returns:
    
    new RowAccess
  - getRowSplittable
```
public RowSplittable getRowSplittable()
```
    Description copied from class: AbstractStarTable
    
    Returns a default splittable which relies on table random access if available, or otherwise provides only sequential access (no splits).
    It is often possible to provide a better implementation than this.
    
    Specified by:
    
    getRowSplittable in interface StarTable
    
    Overrides:
    
    getRowSplittable in class AbstractStarTable
    
    Returns:
    
    Tables.getDefaultRowSplittable(this)
    
    See Also:
    
    RowRunner
  - getRowCount
```
public long getRowCount()
```
    Description copied from interface: StarTable
    
    Returns the number of rows in this table, if known. If the number of rows cannot be (easily) determined, a value of -1 will be returned.
    
    Specified by:
    
    getRowCount in interface StarTable
    
    Specified by:
    
    getRowCount in class AbstractStarTable
    
    Returns:
    
    the number of rows, or -1

Class MetadataStarTable

Constructor Summary

Method Summary

Methods inherited from class uk.ac.starlink.table.AbstractStarTable

Methods inherited from class java.lang.Object

Methods inherited from interface uk.ac.starlink.table.StarTable

Constructor Detail

MetadataStarTable

MetadataStarTable

Method Detail

getColumnInfo

getColumnCount

getRowSequence

getRowAccess

getRowSplittable

getRowCount