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	errorContentLength() Returns the length limit of parsed contents appearing in exception messages when an error occurs
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.
RecordMetaData	recordMetaData() Returns the metadata information associated with records produced by the current parsing process.
String[]	selectedHeaders() Returns the sequence of headers that have been selected.
void	stop() Stops the parsing process.
Record	toRecord(String[] row) Converts the given parsed row to a Record

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()

Description copied from interface: Context

Returns the sequence of headers that have been selected. If no selection has been made, all available headers will be returned, producing the same output as a call to method Context.headers().

Specified by:

selectedHeaders in interface Context

Returns:

the sequence of selected headers, or all headers if no selection has been made.

errorContentLength

public int errorContentLength()

Description copied from interface: Context

Returns the length limit of parsed contents appearing in exception messages when an error occurs

If 0, then no exceptions will include the content being manipulated in their attributes, and the "<omitted>" string will appear in error messages as the parsed content.

defaults to -1 (no limit)

.

Specified by:

errorContentLength in interface Context

Returns:

the maximum length of the data content to display in exception messages

toRecord

public Record toRecord(String[] row)

Description copied from interface: Context

Converts the given parsed row to a Record

Specified by:

toRecord in interface Context

Returns:

a Record representing the given row.

recordMetaData

public RecordMetaData recordMetaData()

Description copied from interface: Context

Returns the metadata information associated with records produced by the current parsing process.

Specified by:

recordMetaData in interface Context

Returns:

the record metadata.