Package ca.uhn.fhir.parser

Interface IParser

  • All Known Subinterfaces:
    IJsonLikeParser
    All Known Implementing Classes:
    BaseParser, JsonParser, RDFParser, XmlParser
    public interface IParser
    A parser, which can be used to convert between HAPI FHIR model/structure objects, and their respective String wire formats, in either XML or JSON.

    Thread safety: Parsers are not guaranteed to be thread safe. Create a new parser instance for every thread or every message being parsed/encoded.

    • Method Detail

      • getEncodeForceResourceId

        IIdType getEncodeForceResourceId()
        If not set to null (as is the default) this ID will be used as the ID in any resources encoded by this parser

      • getStripVersionsFromReferences

        Boolean getStripVersionsFromReferences()
        If set to true (which is the default), resource references containing a version will have the version removed when the resource is encoded. This is generally good behaviour because in most situations, references from one resource to another should be to the resource by ID, not by ID and version. In some cases though, it may be desirable to preserve the version in resource links. In that case, this value should be set to false.
        Returns:
        Returns the parser instance's configuration setting for stripping versions from resource references when encoding. This method will retun null if no value is set, in which case the value from the ParserOptions will be used (default is true)
        See Also:
        ParserOptions

      • parseResource

        <T extends IBaseResource> T parseResource​(Class<T> theResourceType,
                                          Reader theReader)
                                   throws DataFormatException
        Parses a resource
        Parameters:
        theResourceType - The resource type to use. This can be used to explicitly specify a class which extends a built-in type (e.g. a custom type extending the default Patient class)
        theReader - The reader to parse input from. Note that the Reader will not be closed by the parser upon completion.
        Returns:
        A parsed resource
        Throws:
        DataFormatException - If the resource can not be parsed because the data is not recognized or invalid for any reason

      • parseResource

        <T extends IBaseResource> T parseResource​(Class<T> theResourceType,
                                          InputStream theInputStream)
                                   throws DataFormatException
        Parses a resource
        Parameters:
        theResourceType - The resource type to use. This can be used to explicitly specify a class which extends a built-in type (e.g. a custom type extending the default Patient class)
        theInputStream - The InputStream to parse input from, with an implied charset of UTF-8. Note that the InputStream will not be closed by the parser upon completion.
        Returns:
        A parsed resource
        Throws:
        DataFormatException - If the resource can not be parsed because the data is not recognized or invalid for any reason

      • parseResource

        <T extends IBaseResource> T parseResource​(Class<T> theResourceType,
                                          String theString)
                                   throws DataFormatException
        Parses a resource
        Parameters:
        theResourceType - The resource type to use. This can be used to explicitly specify a class which extends a built-in type (e.g. a custom type extending the default Patient class)
        theString - The string to parse
        Returns:
        A parsed resource
        Throws:
        DataFormatException - If the resource can not be parsed because the data is not recognized or invalid for any reason

      • setDontEncodeElements

        IParser setDontEncodeElements​(Set<String> theDontEncodeElements)
        If provided, specifies the elements which should NOT be encoded. Valid values for this field would include:
        • Patient - Don't encode patient and all its children
        • Patient.name - Don't encode the patient's name
        • Patient.name.family - Don't encode the patient's family name
        • *.text - Don't encode the text element on any resource (only the very first position may contain a wildcard)

        DSTU2 note: Note that values including meta, such as Patient.meta will work for DSTU2 parsers, but values with subelements on meta such as Patient.meta.lastUpdated will only work in DSTU3+ mode.

        Parameters:
        theDontEncodeElements - The elements to encode
        See Also:
        setEncodeElements(Set)

      • setEncodeElements

        IParser setEncodeElements​(Set<String> theEncodeElements)
        If provided, specifies the elements which should be encoded, to the exclusion of all others. Valid values for this field would include:
        • Patient - Encode patient and all its children
        • Patient.name - Encode only the patient's name
        • Patient.name.family - Encode only the patient's family name
        • *.text - Encode the text element on any resource (only the very first position may contain a wildcard)
        • *.(mandatory) - This is a special case which causes any mandatory fields (min > 0) to be encoded
        Parameters:
        theEncodeElements - The elements to encode
        See Also:
        setDontEncodeElements(Set)

      • setEncodeElementsAppliesToChildResourcesOnly

        void setEncodeElementsAppliesToChildResourcesOnly​(boolean theEncodeElementsAppliesToChildResourcesOnly)
        If set to true (default is false), the values supplied to setEncodeElements(Set) will not be applied to the root resource (typically a Bundle), but will be applied to any sub-resources contained within it (i.e. search result resources in that bundle)

      • isEncodeElementsAppliesToChildResourcesOnly

        boolean isEncodeElementsAppliesToChildResourcesOnly()
        If set to true (default is false), the values supplied to setEncodeElements(Set) will not be applied to the root resource (typically a Bundle), but will be applied to any sub-resources contained within it (i.e. search result resources in that bundle)

      • setOmitResourceId

        IParser setOmitResourceId​(boolean theOmitResourceId)
        If set to true (default is false) the ID of any resources being encoded will not be included in the output. Note that this does not apply to contained resources, only to root resources. In other words, if this is set to true, contained resources will still have local IDs but the outer/containing ID will not have an ID.
        Parameters:
        theOmitResourceId - Should resource IDs be omitted
        Returns:
        Returns a reference to this parser so that method calls can be chained together
        Since:
        1.1

      • setParserErrorHandler

        IParser setParserErrorHandler​(IParserErrorHandler theErrorHandler)
        Registers an error handler which will be invoked when any parse errors are found
        Parameters:
        theErrorHandler - The error handler to set. Must not be null.

      • setPreferTypes

        void setPreferTypes​(List<Class<? extends IBaseResource>> thePreferTypes)
        If set, when parsing resources the parser will try to use the given types when possible, in the order that they are provided (from highest to lowest priority). For example, if a custom type which declares to implement the Patient resource is passed in here, and the parser is parsing a Bundle containing a Patient resource, the parser will use the given custom type.

        This feature is related to, but not the same as the FhirContext.setDefaultTypeForProfile(String, Class) feature. setDefaultTypeForProfile is used to specify a type to be used when a resource explicitly declares support for a given profile. This feature specifies a type to be used irrespective of the profile declaration in the metadata statement.

        Parameters:
        thePreferTypes - The preferred types, or null

      • setPrettyPrint

        IParser setPrettyPrint​(boolean thePrettyPrint)
        Sets the "pretty print" flag, meaning that the parser will encode resources with human-readable spacing and newlines between elements instead of condensing output as much as possible.
        Parameters:
        thePrettyPrint - The flag
        Returns:
        Returns an instance of this parser so that method calls can be chained together

      • setServerBaseUrl

        IParser setServerBaseUrl​(String theUrl)
        Sets the server's base URL used by this parser. If a value is set, resource references will be turned into relative references if they are provided as absolute URLs but have a base matching the given base.
        Parameters:
        theUrl - The base URL, e.g. "http://example.com/base"
        Returns:
        Returns an instance of this parser so that method calls can be chained together

      • setStripVersionsFromReferences

        IParser setStripVersionsFromReferences​(Boolean theStripVersionsFromReferences)
        If set to true (which is the default), resource references containing a version will have the version removed when the resource is encoded. This is generally good behaviour because in most situations, references from one resource to another should be to the resource by ID, not by ID and version. In some cases though, it may be desirable to preserve the version in resource links. In that case, this value should be set to false.

        This method provides the ability to globally disable reference encoding. If finer-grained control is needed, use setDontStripVersionsFromReferencesAtPaths(String...)

        Parameters:
        theStripVersionsFromReferences - Set this to false to prevent the parser from removing resource versions from references (or null to apply the default setting from the ParserOptions
        Returns:
        Returns a reference to this parser so that method calls can be chained together
        See Also:
        setDontStripVersionsFromReferencesAtPaths(String...), ParserOptions

      • setOverrideResourceIdWithBundleEntryFullUrl

        IParser setOverrideResourceIdWithBundleEntryFullUrl​(Boolean theOverrideResourceIdWithBundleEntryFullUrl)
        If set to true (which is the default), the Bundle.entry.fullUrl will override the Bundle.entry.resource's resource id if the fullUrl is defined. This behavior happens when parsing the source data into a Bundle object. Set this to false if this is not the desired behavior (e.g. the client code wishes to perform additional validation checks between the fullUrl and the resource id).
        Parameters:
        theOverrideResourceIdWithBundleEntryFullUrl - Set this to false to prevent the parser from overriding resource ids with the Bundle.entry.fullUrl (or null to apply the default setting from the ParserOptions)
        Returns:
        Returns a reference to this parser so that method calls can be chained together
        See Also:
        ParserOptions

      • setSummaryMode

        IParser setSummaryMode​(boolean theSummaryMode)
        If set to true (default is false) only elements marked by the FHIR specification as being "summary elements" will be included.
        Returns:
        Returns a reference to this parser so that method calls can be chained together

      • setSuppressNarratives

        IParser setSuppressNarratives​(boolean theSuppressNarratives)
        If set to true (default is false), narratives will not be included in the encoded values.

      • setDontStripVersionsFromReferencesAtPaths

        IParser setDontStripVersionsFromReferencesAtPaths​(String... thePaths)
        If supplied value(s), any resource references at the specified paths will have their resource versions encoded instead of being automatically stripped during the encoding process. This setting has no effect on the parsing process.

        This method provides a finer-grained level of control than setStripVersionsFromReferences(Boolean) and any paths specified by this method will be encoded even if setStripVersionsFromReferences(Boolean) has been set to true (which is the default)

        Parameters:
        thePaths - A collection of paths for which the resource versions will not be removed automatically when serializing, e.g. "Patient.managingOrganization" or "AuditEvent.object.reference". Note that only resource name and field names with dots separating is allowed here (no repetition indicators, FluentPath expressions, etc.). Set to null to use the value set in the ParserOptions
        Returns:
        Returns a reference to this parser so that method calls can be chained together
        See Also:
        setStripVersionsFromReferences(Boolean), ParserOptions

      • setDontStripVersionsFromReferencesAtPaths

        IParser setDontStripVersionsFromReferencesAtPaths​(Collection<String> thePaths)
        If supplied value(s), any resource references at the specified paths will have their resource versions encoded instead of being automatically stripped during the encoding process. This setting has no effect on the parsing process.

        This method provides a finer-grained level of control than setStripVersionsFromReferences(Boolean) and any paths specified by this method will be encoded even if setStripVersionsFromReferences(Boolean) has been set to true (which is the default)

        Parameters:
        thePaths - A collection of paths for which the resource versions will not be removed automatically when serializing, e.g. "Patient.managingOrganization" or "AuditEvent.object.reference". Note that only resource name and field names with dots separating is allowed here (no repetition indicators, FluentPath expressions, etc.). Set to null to use the value set in the ParserOptions
        Returns:
        Returns a reference to this parser so that method calls can be chained together
        See Also:
        setStripVersionsFromReferences(Boolean), ParserOptions