com.univocity.parsers.common
Class ContextWrapper<T extends Context>

java.lang.Object
  com.univocity.parsers.common.ContextWrapper<T>

All Implemented Interfaces:

Context

Direct Known Subclasses:

ContextSnapshot, ParsingContextWrapper

public abstract class ContextWrapper<T extends Context>
extends Object
implements Context

A simple a wrapper for a Context.

Author:

uniVocity Software Pty Ltd - parsers@univocity.com

Field Summary

protected T

context

Constructor Summary

ContextWrapper(T context)
Wraps a Context.

Method Summary

boolean	columnsReordered() Indicates whether selected fields are being reordered.
int	currentColumn() Returns the column index of the record being processed.
long	currentRecord() Returns the index of the last valid record parsed from the input
int[]	extractedFieldIndexes() Returns the indexes of each field extracted from the input when fields are selected.
String[]	headers() Returns the file headers that identify each parsed record.
int	indexOf(Enum<?> header) Returns the position of a header (0 based).
int	indexOf(String header) Returns the position of a header (0 based).
boolean	isStopped() Identifies whether the parser is running.
String[]	selectedHeaders()
void	stop() Stops the parsing process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

context

protected final T extends Context context

Constructor Detail

ContextWrapper

public ContextWrapper(T context)

Wraps a Context.

Parameters:

context - the context object to be wrapped.

Method Detail

headers

public String[] headers()

Description copied from interface: Context

Returns the file headers that identify each parsed record.

Specified by:

headers in interface Context

Returns:

the headers used to identify each record parsed from the input.

extractedFieldIndexes

public int[] extractedFieldIndexes()

Description copied from interface: Context

Returns the indexes of each field extracted from the input when fields are selected.

The indexes are relative to their original position in the input.

For example, if the input has the fields "A, B, C, D", and the selected fields are "A, D", then the extracted field indexes will return [0, 3]

If no fields were selected, then this method will return null. This means all fields are being parsed.

Specified by:

extractedFieldIndexes in interface Context

Returns:

The indexes of each selected field; null if no fields were selected.

See Also:

CommonSettings

columnsReordered

public boolean columnsReordered()

Description copied from interface: Context

Indicates whether selected fields are being reordered.

If columns are reordered, each parsed record will contain values only for the selected fields, as specified by Context.extractedFieldIndexes()

Specified by:

columnsReordered in interface Context

Returns:

true if the parsed records are being reordered by the parser, false otherwise

See Also:

CommonParserSettings, CommonSettings

indexOf

public int indexOf(String header)

Description copied from interface: Context

Returns the position of a header (0 based).

Specified by:

indexOf in interface Context

Parameters:

header - the header whose position will be returned

Returns:

the position of the given header, or -1 if it could not be found.

indexOf

public int indexOf(Enum<?> header)

Description copied from interface: Context

Returns the position of a header (0 based).

Specified by:

indexOf in interface Context

Parameters:

header - the header whose position will be returned

Returns:

the position of the given header, or -1 if it could not be found.

currentColumn

public int currentColumn()

Description copied from interface: Context

Returns the column index of the record being processed.

Specified by:

currentColumn in interface Context

Returns:

the column index of the record being processed.

currentRecord

public long currentRecord()

Description copied from interface: Context

Returns the index of the last valid record parsed from the input

Specified by:

currentRecord in interface Context

Returns:

the index of the last valid record parsed from the input

stop

public void stop()

Description copied from interface: Context

Stops the parsing process. Any open resources in use by the parser are closed automatically.

Specified by:

stop in interface Context

isStopped

public boolean isStopped()

Description copied from interface: Context

Identifies whether the parser is running.

Specified by:

isStopped in interface Context

Returns:

true if the parser is stopped, false otherwise.

selectedHeaders

public String[] selectedHeaders()

Specified by:

selectedHeaders in interface Context