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## edu.stanford.nlp.sequences
Class PlainTextDocumentReaderAndWriter

    java.lang.Object
      edu.stanford.nlp.sequences.PlainTextDocumentReaderAndWriter

All Implemented Interfaces:
  IteratorFromReaderFactory<List<CoreLabel>>, DocumentReaderAndWriter, Serializable

    public class PlainTextDocumentReaderAndWriter

extends Object
implements DocumentReaderAndWriter

This class provides methods for reading plain text documents and writing out those documents once classified in several different formats.

Implementation note: see itest/src/edu/stanford/nlp/ie/crf/CRFClassifierITest.java for examples and test cases for the output options.

Author:
  Jenny Finkel, Christopher Manning (new output options organization)
See Also:
  Serialized Form

Field Summary
`static int` | `OUTPUT_STYLE_INLINE_XML`
`static int` | `OUTPUT_STYLE_SLASH_TAGS`
`static int` | `OUTPUT_STYLE_TSV`
`static int` | `OUTPUT_STYLE_XML`

Constructor Summary
`PlainTextDocumentReaderAndWriter()` Construct a PlainTextDocumentReaderAndWriter.

Method Summary
`static int` | `asIntOutputFormat(String outputFormat)` Convert a String expressing an output format to its internal coding as an int constant.
`static String` | `getAnswers(List<CoreLabel> l)` Deprecated. This has been left in since it is still called in the version of the tagger that we currently distribute, but it will be removed.
`String` | `getAnswers(List<CoreLabel> l, int outputStyle, boolean preserveSpacing)`
`Iterator<List<CoreLabel>>` | `getIterator(Reader r)`
`void` | `init(SeqClassifierFlags flags)` Will be called immediately after construction.
`void` | `printAnswers(List<CoreLabel> list, PrintWriter out)` Print the classifications for the document to the given Writer.
`void` | `printAnswers(List<CoreLabel> l, PrintWriter out, int outputStyle, boolean preserveSpacing)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

### OUTPUT_STYLE_SLASH_TAGS

    public static final int OUTPUT_STYLE_SLASH_TAGS

See Also:
  Constant Field Values

### OUTPUT_STYLE_XML

    public static final int OUTPUT_STYLE_XML

See Also:
  Constant Field Values

### OUTPUT_STYLE_INLINE_XML

    public static final int OUTPUT_STYLE_INLINE_XML

See Also:
  Constant Field Values

### OUTPUT_STYLE_TSV

    public static final int OUTPUT_STYLE_TSV

See Also:
  Constant Field Values

Constructor Detail

### PlainTextDocumentReaderAndWriter

    public PlainTextDocumentReaderAndWriter()

  Construct a PlainTextDocumentReaderAndWriter. You should call init() after using the constructor.

Method Detail

### init

    public void init(SeqClassifierFlags flags)

  Description copied from interface: `DocumentReaderAndWriter`
  Will be called immediately after construction. It's easier having an init() method because DocumentReaderAndWriter objects are usually created using reflection.

  Specified by:
    `init` in interface `DocumentReaderAndWriter`
  Parameters:
    `flags` - Flags specifying behavior

### getIterator

    public Iterator<List<CoreLabel>> getIterator(Reader r)

  Specified by:
    `getIterator` in interface `IteratorFromReaderFactory<List<CoreLabel>>`

### getAnswers

    public static String getAnswers(List<CoreLabel> l)

  Deprecated. This has been left in since it is still called in the version of the tagger that we currently distribute, but it will be removed.

### asIntOutputFormat

    public static int asIntOutputFormat(String outputFormat)

  Convert a String expressing an output format to its internal coding as an int constant.

  Parameters:
    `outputFormat` - The String
  Returns:
    int The internal constant

### printAnswers

    public void printAnswers(List<CoreLabel> list,
                             PrintWriter out)

  Print the classifications for the document to the given Writer. This method now checks the `outputFormat` property, and can print in slashTags, inlineXML, or xml (stand-Off XML). For both the XML output formats, it preserves spacing, while for the slashTags format, it prints tokenized (since preserveSpacing output is somewhat dysfunctional with the slashTags format).

  Specified by:
    `printAnswers` in interface `DocumentReaderAndWriter`
  Parameters:
    `list` - List of tokens with classifier answers
    `out` - Where to print the output to

### getAnswers

    public String getAnswers(List<CoreLabel> l,
                             int outputStyle,
                             boolean preserveSpacing)

### printAnswers

    public void printAnswers(List<CoreLabel> l,
                             PrintWriter out,
                             int outputStyle,
                             boolean preserveSpacing)

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Stanford NLP Group