com.fasterxml.jackson.core.format

## Class DataFormatMatcher

- java.lang.Object
- - com.fasterxml.jackson.core.format.DataFormatMatcher

-     public class DataFormatMatcher
      extends Object

  Result object constructed by `DataFormatDetector` when requested to detect format of given input data.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `protected byte[]` | `_bufferedData` Content read during format matching process
    `protected int` | `_bufferedLength` Number of bytes available in buffer.
    `protected int` | `_bufferedStart` Pointer to the first byte in buffer available for reading
    `protected JsonFactory` | `_match` Factory that produced sufficient match (if any)
    `protected MatchStrength` | `_matchStrength` Strength of match with `_match`
    `protected InputStream` | `_originalStream`

  - ### Constructor Summary

    Constructors
    Modifier | Constructor and Description
    --- | ---
    `protected` | `DataFormatMatcher(InputStream in, byte[] buffered, int bufferedStart, int bufferedLength, JsonFactory match, MatchStrength strength)`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `JsonParser` | `createParserWithMatch()` Convenience method for trying to construct a `JsonParser` for parsing content which is assumed to be in detected data format.
    `InputStream` | `getDataStream()` Method to use for accessing input for which format detection has been done.
    `JsonFactory` | `getMatch()` Accessor for `JsonFactory` that represents format that data matched.
    `String` | `getMatchedFormatName()` Accessor for getting brief textual name of matched format if any (null if none).
    `MatchStrength` | `getMatchStrength()` Method for accessing strength of the match, if any; if no match, will return `MatchStrength.INCONCLUSIVE`.
    `boolean` | `hasMatch()` Accessor to use to see if any formats matched well enough with the input data.

    - ### Methods inherited from class java.lang.Object

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

- - ### Field Detail

    - #### _originalStream

          protected final InputStream _originalStream

    - #### _bufferedData

          protected final byte[] _bufferedData

      Content read during format matching process

    - #### _bufferedStart

          protected final int _bufferedStart

      Pointer to the first byte in buffer available for reading

    - #### _bufferedLength

          protected final int _bufferedLength

      Number of bytes available in buffer.

    - #### _match

          protected final JsonFactory _match

      Factory that produced sufficient match (if any)

    - #### _matchStrength

          protected final MatchStrength _matchStrength

      Strength of match with `_match`

  - ### Constructor Detail

    - #### DataFormatMatcher

          protected DataFormatMatcher(InputStream in,
                           byte[] buffered,
                           int bufferedStart,
                           int bufferedLength,
                           JsonFactory match,
                           MatchStrength strength)

  - ### Method Detail

    - #### hasMatch

          public boolean hasMatch()

      Accessor to use to see if any formats matched well enough with the input data.

    - #### getMatchStrength

          public MatchStrength getMatchStrength()

      Method for accessing strength of the match, if any; if no match, will return `MatchStrength.INCONCLUSIVE`.

    - #### getMatch

          public JsonFactory getMatch()

      Accessor for `JsonFactory` that represents format that data matched.

    - #### getMatchedFormatName

          public String getMatchedFormatName()

      Accessor for getting brief textual name of matched format if any (null if none). Equivalent to:

             return hasMatch() ? getMatch().getFormatName() : null;

    - #### createParserWithMatch

          public JsonParser createParserWithMatch()
                                           throws IOException

      Convenience method for trying to construct a `JsonParser` for parsing content which is assumed to be in detected data format. If no match was found, returns null.
      Throws:
        `IOException`

    - #### getDataStream

          public InputStream getDataStream()

      Method to use for accessing input for which format detection has been done. This must be used instead of using stream passed to detector unless given stream itself can do buffering. Stream will return all content that was read during matching process, as well as remaining contents of the underlying stream.

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