Package org.elasticsearch.common.xcontent

Class XContentHelper

java.lang.Object
org.elasticsearch.common.xcontent.XContentHelper
public class XContentHelper extends Object

  • Constructor Details

    • XContentHelper

      public XContentHelper()

  • Method Details

    • createParser

      @Deprecated public static org.elasticsearch.xcontent.XContentParser createParser(org.elasticsearch.xcontent.NamedXContentRegistry registry, org.elasticsearch.xcontent.DeprecationHandler deprecation, BytesReference bytes) throws IOException
      Deprecated.
      use createParser(XContentParserConfiguration, BytesReference, XContentType) to avoid content type auto-detection
      Creates a parser based on the bytes provided
      Throws:
      IOException

    • createParser

      @Deprecated public static org.elasticsearch.xcontent.XContentParser createParser(org.elasticsearch.xcontent.XContentParserConfiguration config, BytesReference bytes) throws IOException
      Deprecated.
      use createParser(XContentParserConfiguration, BytesReference, XContentType) to avoid content type auto-detection
      Creates a parser based on the bytes provided
      Throws:
      IOException

    • createParser

      @Deprecated public static org.elasticsearch.xcontent.XContentParser createParser(org.elasticsearch.xcontent.NamedXContentRegistry registry, org.elasticsearch.xcontent.DeprecationHandler deprecation, BytesReference bytes, org.elasticsearch.xcontent.XContentType xContentType) throws IOException
      Deprecated.
      use createParser(XContentParserConfiguration, BytesReference, XContentType)
      Creates a parser for the bytes provided
      Throws:
      IOException

    • createParser

      public static org.elasticsearch.xcontent.XContentParser createParser(org.elasticsearch.xcontent.XContentParserConfiguration config, BytesReference bytes, org.elasticsearch.xcontent.XContentType xContentType) throws IOException
      Creates a parser for the bytes using the supplied content-type
      Throws:
      IOException

    • convertToMap

      @Deprecated public static org.elasticsearch.core.Tuple<org.elasticsearch.xcontent.XContentType,Map<String,Object>> convertToMap(BytesReference bytes, boolean ordered) throws ElasticsearchParseException
      Deprecated.
      this method relies on auto-detection of content type. Use convertToMap(BytesReference, boolean, XContentType) instead with the proper XContentType
      Converts the given bytes into a map that is optionally ordered.

      Important: This can lose precision on numbers with a decimal point. It converts numbers like "n": 1234.567 to a double which only has 52 bits of precision in the mantissa. This will come up most frequently when folks write nanosecond precision dates as a decimal number.

      Throws:
      ElasticsearchParseException

    • convertToMap

      public static org.elasticsearch.core.Tuple<org.elasticsearch.xcontent.XContentType,Map<String,Object>> convertToMap(BytesReference bytes, boolean ordered, org.elasticsearch.xcontent.XContentType xContentType)
      Exactly the same as convertToMap(BytesReference, boolean, XContentType, Set, Set) but none of the fields are filtered

    • convertToMap

      public static org.elasticsearch.core.Tuple<org.elasticsearch.xcontent.XContentType,Map<String,Object>> convertToMap(BytesReference bytes, boolean ordered, org.elasticsearch.xcontent.XContentType xContentType, @Nullable Set<String> include, @Nullable Set<String> exclude) throws ElasticsearchParseException
      Converts the given bytes into a map that is optionally ordered. The provided XContentType must be non-null.

      Important: This can lose precision on numbers with a decimal point. It converts numbers like "n": 1234.567 to a double which only has 52 bits of precision in the mantissa. This will come up most frequently when folks write nanosecond precision dates as a decimal number.

      Throws:
      ElasticsearchParseException

    • convertToMap

      public static Map<String,Object> convertToMap(org.elasticsearch.xcontent.XContent xContent, String string, boolean ordered) throws ElasticsearchParseException
      Convert a string in some XContent format to a Map. Throws an ElasticsearchParseException if there is any error.
      Throws:
      ElasticsearchParseException

    • convertToMap

      public static Map<String,Object> convertToMap(org.elasticsearch.xcontent.XContent xContent, InputStream input, boolean ordered) throws ElasticsearchParseException
      The same as convertToMap(XContent, byte[], int, int, boolean, Set, Set) but none of the fields are filtered.
      Throws:
      ElasticsearchParseException

    • convertToMap

      public static Map<String,Object> convertToMap(org.elasticsearch.xcontent.XContent xContent, InputStream input, boolean ordered, @Nullable Set<String> include, @Nullable Set<String> exclude) throws ElasticsearchParseException
      Convert a string in some XContent format to a Map. Throws an ElasticsearchParseException if there is any error. Note that unlike convertToMap(BytesReference, boolean), this doesn't automatically uncompress the input. Additionally, fields may be included or excluded from the parsing.
      Throws:
      ElasticsearchParseException

    • convertToMap

      public static Map<String,Object> convertToMap(org.elasticsearch.xcontent.XContent xContent, byte[] bytes, int offset, int length, boolean ordered) throws ElasticsearchParseException
      Convert a byte array in some XContent format to a Map. Throws an ElasticsearchParseException if there is any error. Note that unlike convertToMap(BytesReference, boolean), this doesn't automatically uncompress the input.
      Throws:
      ElasticsearchParseException

    • convertToMap

      public static Map<String,Object> convertToMap(org.elasticsearch.xcontent.XContent xContent, byte[] bytes, int offset, int length, boolean ordered, @Nullable Set<String> include, @Nullable Set<String> exclude) throws ElasticsearchParseException
      Convert a byte array in some XContent format to a Map. Throws an ElasticsearchParseException if there is any error. Note that unlike convertToMap(BytesReference, boolean), this doesn't automatically uncompress the input. Unlike convertToMap(XContent, byte[], int, int, boolean) this optionally accepts fields to include or exclude during XContent parsing.
      Throws:
      ElasticsearchParseException

    • convertToJson

      @Deprecated public static String convertToJson(BytesReference bytes, boolean reformatJson) throws IOException
      Deprecated.
      Throws:
      IOException

    • convertToJson

      @Deprecated public static String convertToJson(BytesReference bytes, boolean reformatJson, boolean prettyPrint) throws IOException
      Deprecated.
      Throws:
      IOException

    • convertToJson

      public static String convertToJson(BytesReference bytes, boolean reformatJson, org.elasticsearch.xcontent.XContentType xContentType) throws IOException
      Throws:
      IOException

    • stripWhitespace

      public static String stripWhitespace(String json) throws IOException
      Accepts a JSON string, parses it and prints it without pretty-printing it. This is useful where a piece of JSON is formatted for legibility, but needs to be stripped of unnecessary whitespace e.g. for comparison in a test.
      Parameters:
      json - the JSON to format
      Returns:
      reformatted JSON
      Throws:
      IOException - if the reformatting fails, e.g. because the JSON is not well-formed

    • convertToJson

      public static String convertToJson(BytesReference bytes, boolean reformatJson, boolean prettyPrint, org.elasticsearch.xcontent.XContentType xContentType) throws IOException
      Throws:
      IOException

    • update

      public static boolean update(Map<String,Object> source, Map<String,Object> changes, boolean checkUpdatesAreUnequal)
      Updates the provided changes into the source. If the key exists in the changes, it overrides the one in source unless both are Maps, in which case it recursively updated it.
      Parameters:
      source - the original map to be updated
      changes - the changes to update into updated
      checkUpdatesAreUnequal - should this method check if updates to the same key (that are not both maps) are unequal? This is just a .equals check on the objects, but that can take some time on long strings.
      Returns:
      true if the source map was modified

    • mergeDefaults

      public static void mergeDefaults(Map<String,Object> content, Map<String,Object> defaults)
      Merges the defaults provided as the second parameter into the content of the first. Only does recursive merge for inner maps.

    • writeRawField

      @Deprecated public static void writeRawField(String field, BytesReference source, org.elasticsearch.xcontent.XContentBuilder builder, org.elasticsearch.xcontent.ToXContent.Params params) throws IOException
      Deprecated.
      use writeRawField(String, BytesReference, XContentType, XContentBuilder, Params) to avoid content type auto-detection
      Writes a "raw" (bytes) field, handling cases where the bytes are compressed, and tries to optimize writing using XContentBuilder.rawField(String, InputStream).
      Throws:
      IOException

    • writeRawField

      public static void writeRawField(String field, BytesReference source, org.elasticsearch.xcontent.XContentType xContentType, org.elasticsearch.xcontent.XContentBuilder builder, org.elasticsearch.xcontent.ToXContent.Params params) throws IOException
      Writes a "raw" (bytes) field, handling cases where the bytes are compressed, and tries to optimize writing using XContentBuilder.rawField(String, InputStream, XContentType).
      Throws:
      IOException

    • toXContent

      public static BytesReference toXContent(org.elasticsearch.xcontent.ToXContent toXContent, org.elasticsearch.xcontent.XContentType xContentType, boolean humanReadable) throws IOException
      Returns the bytes that represent the XContent output of the provided ToXContent object, using the provided XContentType. Wraps the output into a new anonymous object according to the value returned by the ToXContent.isFragment() method returns.
      Throws:
      IOException

    • toXContent

      public static BytesReference toXContent(org.elasticsearch.xcontent.ToXContent toXContent, org.elasticsearch.xcontent.XContentType xContentType, org.elasticsearch.xcontent.ToXContent.Params params, boolean humanReadable) throws IOException
      Returns the bytes that represent the XContent output of the provided ToXContent object, using the provided XContentType. Wraps the output into a new anonymous object according to the value returned by the ToXContent.isFragment() method returns.
      Throws:
      IOException

    • xContentTypeMayCompressed

      @Deprecated public static org.elasticsearch.xcontent.XContentType xContentTypeMayCompressed(BytesReference bytes)
      Deprecated.
      the content type should not be guessed except for few cases where we effectively don't know the content type. The REST layer should move to reading the Content-Type header instead. There are other places where auto-detection may be needed. This method is deprecated to prevent usages of it from spreading further without specific reasons.
      Guesses the content type based on the provided bytes which may be compressed.

    • xContentType

      @Deprecated public static org.elasticsearch.xcontent.XContentType xContentType(BytesReference bytes)
      Deprecated.
      the content type should not be guessed except for few cases where we effectively don't know the content type. The REST layer should move to reading the Content-Type header instead. There are other places where auto-detection may be needed. This method is deprecated to prevent usages of it from spreading further without specific reasons.
      Guesses the content type based on the provided bytes.

    • childBytes

      public static BytesReference childBytes(org.elasticsearch.xcontent.XContentParser parser) throws IOException
      Returns the contents of an object as an unparsed BytesReference This is useful for things like mappings where we're copying bytes around but don't actually need to parse their contents, and so avoids building large maps of maps unnecessarily
      Throws:
      IOException

    • writeTo

      public static void writeTo(StreamOutput out, org.elasticsearch.xcontent.XContentType xContentType) throws IOException
      Serialises new XContentType VND_ values in a bwc manner TODO remove in ES v9
      Parameters:
      out - stream output of the destination node
      xContentType - an instance to serialize
      Throws:
      IOException