java.lang.Object
- org.hl7.fhir.r4.model.Base
- - org.hl7.fhir.r4.model.Element
  - - org.hl7.fhir.r4.model.Type
    - - org.hl7.fhir.r4.model.Expression

All Implemented Interfaces:

ca.uhn.fhir.model.api.IElement, Serializable, org.hl7.fhir.instance.model.api.IBase, org.hl7.fhir.instance.model.api.IBaseDatatype, org.hl7.fhir.instance.model.api.IBaseElement, org.hl7.fhir.instance.model.api.IBaseHasExtensions, org.hl7.fhir.instance.model.api.ICompositeType
```
public class Expression
extends Type
implements org.hl7.fhir.instance.model.api.ICompositeType
```
A expression that is evaluated in a specified context and returns a value. The context of use of the expression must specify the context in which the expression is evaluated, and how the result of the expression is used.

See Also:

Serialized Form

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class Expression.ExpressionLanguage

static class Expression.ExpressionLanguageEnumFactory

Field Summary

Fields
Modifier and Type	Field	Description
`protected StringType`	`description`	A brief, natural language description of the condition that effectively communicates the intended semantics.
`protected StringType`	`expression`	An expression in the specified language that returns a value.
`protected CodeType`	`language`	The media type of the language for the expression.
`protected IdType`	`name`	A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.
`protected UriType`	`reference`	A URI that defines where the expression is found.

Fields inherited from class org.hl7.fhir.r4.model.Element
extension, id

Constructor Summary

Constructors
Constructor Description

Expression()
Constructor

Expression(CodeType language)
Constructor

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`Base`	`addChild(String name)`
`Expression`	`copy()`
`void`	`copyValues(Expression dst)`
`boolean`	`equalsDeep(Base other_)`
`boolean`	`equalsShallow(Base other_)`
`String`	`fhirType()`
`String`	`getDescription()`
`StringType`	`getDescriptionElement()`
`String`	`getExpression()`
`StringType`	`getExpressionElement()`
`String`	`getLanguage()`
`CodeType`	`getLanguageElement()`
`String`	`getName()`
`Property`	`getNamedProperty(int _hash, String _name, boolean _checkValid)`
`IdType`	`getNameElement()`
`Base[]`	`getProperty(int hash, String name, boolean checkValid)`
`String`	`getReference()`
`UriType`	`getReferenceElement()`
`String[]`	`getTypesForProperty(int hash, String name)`
`boolean`	`hasDescription()`
`boolean`	`hasDescriptionElement()`
`boolean`	`hasExpression()`
`boolean`	`hasExpressionElement()`
`boolean`	`hasLanguage()`
`boolean`	`hasLanguageElement()`
`boolean`	`hasName()`
`boolean`	`hasNameElement()`
`boolean`	`hasReference()`
`boolean`	`hasReferenceElement()`
`boolean`	`isEmpty()`
`protected void`	`listChildren(List<Property> children)`
`Base`	`makeProperty(int hash, String name)`
`Expression`	`setDescription(String value)`
`Expression`	`setDescriptionElement(StringType value)`
`Expression`	`setExpression(String value)`
`Expression`	`setExpressionElement(StringType value)`
`Expression`	`setLanguage(String value)`
`Expression`	`setLanguageElement(CodeType value)`
`Expression`	`setName(String value)`
`Expression`	`setNameElement(IdType value)`
`Base`	`setProperty(int hash, String name, Base value)`
`Base`	`setProperty(String name, Base value)`
`Expression`	`setReference(String value)`
`Expression`	`setReferenceElement(UriType value)`
`protected Expression`	`typedCopy()`

Methods inherited from class org.hl7.fhir.r4.model.Element
addExtension, addExtension, addExtension, copyValues, getExtension, getExtensionByUrl, getExtensionFirstRep, getExtensionsByUrl, getExtensionString, getId, getIdBase, getIdElement, hasExtension, hasExtension, hasId, hasIdElement, isDisallowExtensions, noExtensions, removeExtension, setDisallowExtensions, setExtension, setId, setIdBase, setIdElement

Methods inherited from class org.hl7.fhir.r4.model.Base
castToAddress, castToAnnotation, castToAttachment, castToBase64Binary, castToBoolean, castToCanonical, castToCode, castToCodeableConcept, castToCoding, castToContactDetail, castToContactPoint, castToContributor, castToDataRequirement, castToDate, castToDateTime, castToDecimal, castToDosage, castToDuration, castToElementDefinition, castToExpression, castToExtension, castToHumanName, castToId, castToIdentifier, castToInstant, castToInteger, castToMarkdown, castToMarketingStatus, castToMeta, castToMoney, castToNarrative, castToOid, castToParameterDefinition, castToPeriod, castToPopulation, castToPositiveInt, castToProdCharacteristic, castToProductShelfLife, castToQuantity, castToRange, castToRatio, castToReference, castToRelatedArtifact, castToResource, castToSampledData, castToSignature, castToSimpleQuantity, castToString, castToSubstanceAmount, castToTime, castToTiming, castToTriggerDefinition, castToType, castToUnsignedInt, castToUri, castToUrl, castToUsageContext, castToXhtml, castToXhtmlString, children, clearUserData, compareDeep, compareDeep, compareDeep, compareDeep, compareValues, compareValues, dateTimeValue, equals, getChildByName, getFormatCommentsPost, getFormatCommentsPre, getNamedProperty, getUserData, getUserInt, getUserString, hasFormatComment, hasPrimitiveValue, hasType, hasUserData, isBooleanPrimitive, isDateTime, isMetadataBased, isPrimitive, isResource, listChildrenByName, listChildrenByName, primitiveValue, setUserData, setUserDataINN

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

Methods inherited from interface org.hl7.fhir.instance.model.api.IBase
getFormatCommentsPost, getFormatCommentsPre, getUserData, hasFormatComment, setUserData

Methods inherited from interface org.hl7.fhir.instance.model.api.IBaseElement
getUserData, setUserData

- Field Detail
  - description
```
protected StringType description
```
    A brief, natural language description of the condition that effectively communicates the intended semantics.
  - name
```
protected IdType name
```
    A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.
  - language
```
protected CodeType language
```
    The media type of the language for the expression.
  - expression
```
protected StringType expression
```
    An expression in the specified language that returns a value.
  - reference
```
protected UriType reference
```
    A URI that defines where the expression is found.
- Constructor Detail
  - Expression
```
public Expression()
```
    Constructor
  - Expression
```
public Expression(CodeType language)
```
    Constructor
- Method Detail
  - getDescriptionElement
```
public StringType getDescriptionElement()
```
    Returns:
    
    description (A brief, natural language description of the condition that effectively communicates the intended semantics.). This is the underlying object with id, value and extensions. The accessor "getDescription" gives direct access to the value
  - hasDescriptionElement
```
public boolean hasDescriptionElement()
```
  - hasDescription
```
public boolean hasDescription()
```
  - setDescriptionElement
```
public Expression setDescriptionElement(StringType value)
```
    Parameters:
    
    value - description (A brief, natural language description of the condition that effectively communicates the intended semantics.). This is the underlying object with id, value and extensions. The accessor "getDescription" gives direct access to the value
  - getDescription
```
public String getDescription()
```
    Returns:
    
    A brief, natural language description of the condition that effectively communicates the intended semantics.
  - setDescription
```
public Expression setDescription(String value)
```
    Parameters:
    
    value - A brief, natural language description of the condition that effectively communicates the intended semantics.
  - getNameElement
```
public IdType getNameElement()
```
    Returns:
    
    name (A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.). This is the underlying object with id, value and extensions. The accessor "getName" gives direct access to the value
  - hasNameElement
```
public boolean hasNameElement()
```
  - hasName
```
public boolean hasName()
```
  - setNameElement
```
public Expression setNameElement(IdType value)
```
    Parameters:
    
    value - name (A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.). This is the underlying object with id, value and extensions. The accessor "getName" gives direct access to the value
  - getName
```
public String getName()
```
    Returns:
    
    A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.
  - setName
```
public Expression setName(String value)
```
    Parameters:
    
    value - A short name assigned to the expression to allow for multiple reuse of the expression in the context where it is defined.
  - getLanguageElement
```
public CodeType getLanguageElement()
```
    Returns:
    
    language (The media type of the language for the expression.). This is the underlying object with id, value and extensions. The accessor "getLanguage" gives direct access to the value
  - hasLanguageElement
```
public boolean hasLanguageElement()
```
  - hasLanguage
```
public boolean hasLanguage()
```
  - setLanguageElement
```
public Expression setLanguageElement(CodeType value)
```
    Parameters:
    
    value - language (The media type of the language for the expression.). This is the underlying object with id, value and extensions. The accessor "getLanguage" gives direct access to the value
  - getLanguage
```
public String getLanguage()
```
    Returns:
    
    The media type of the language for the expression.
  - setLanguage
```
public Expression setLanguage(String value)
```
    Parameters:
    
    value - The media type of the language for the expression.
  - getExpressionElement
```
public StringType getExpressionElement()
```
    Returns:
    
    expression (An expression in the specified language that returns a value.). This is the underlying object with id, value and extensions. The accessor "getExpression" gives direct access to the value
  - hasExpressionElement
```
public boolean hasExpressionElement()
```
  - hasExpression
```
public boolean hasExpression()
```
  - setExpressionElement
```
public Expression setExpressionElement(StringType value)
```
    Parameters:
    
    value - expression (An expression in the specified language that returns a value.). This is the underlying object with id, value and extensions. The accessor "getExpression" gives direct access to the value
  - getExpression
```
public String getExpression()
```
    Returns:
    
    An expression in the specified language that returns a value.
  - setExpression
```
public Expression setExpression(String value)
```
    Parameters:
    
    value - An expression in the specified language that returns a value.
  - getReferenceElement
```
public UriType getReferenceElement()
```
    Returns:
    
    reference (A URI that defines where the expression is found.). This is the underlying object with id, value and extensions. The accessor "getReference" gives direct access to the value
  - hasReferenceElement
```
public boolean hasReferenceElement()
```
  - hasReference
```
public boolean hasReference()
```
  - setReferenceElement
```
public Expression setReferenceElement(UriType value)
```
    Parameters:
    
    value - reference (A URI that defines where the expression is found.). This is the underlying object with id, value and extensions. The accessor "getReference" gives direct access to the value
  - getReference
```
public String getReference()
```
    Returns:
    
    A URI that defines where the expression is found.
  - setReference
```
public Expression setReference(String value)
```
    Parameters:
    
    value - A URI that defines where the expression is found.
  - listChildren
```
protected void listChildren(List<Property> children)
```
    Overrides:
    
    listChildren in class Element
  - getNamedProperty
```
public Property getNamedProperty(int _hash,
                                 String _name,
                                 boolean _checkValid)
                          throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    getNamedProperty in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - getProperty
```
public Base[] getProperty(int hash,
                          String name,
                          boolean checkValid)
                   throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    getProperty in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - setProperty
```
public Base setProperty(int hash,
                        String name,
                        Base value)
                 throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    setProperty in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - setProperty
```
public Base setProperty(String name,
                        Base value)
                 throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    setProperty in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - makeProperty
```
public Base makeProperty(int hash,
                         String name)
                  throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    makeProperty in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - getTypesForProperty
```
public String[] getTypesForProperty(int hash,
                                    String name)
                             throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    getTypesForProperty in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - addChild
```
public Base addChild(String name)
              throws org.hl7.fhir.exceptions.FHIRException
```
    Overrides:
    
    addChild in class Element
    
    Throws:
    
    org.hl7.fhir.exceptions.FHIRException
  - fhirType
```
public String fhirType()
```
    Specified by:
    
    fhirType in interface org.hl7.fhir.instance.model.api.IBase
    
    Overrides:
    
    fhirType in class Element
  - copy
```
public Expression copy()
```
    Overrides:
    
    copy in class Type
  - copyValues
```
public void copyValues(Expression dst)
```
  - typedCopy
```
protected Expression typedCopy()
```
    Specified by:
    
    typedCopy in class Type
  - equalsDeep
```
public boolean equalsDeep(Base other_)
```
    Overrides:
    
    equalsDeep in class Element
  - equalsShallow
```
public boolean equalsShallow(Base other_)
```
    Overrides:
    
    equalsShallow in class Element
  - isEmpty
```
public boolean isEmpty()
```
    Specified by:
    
    isEmpty in interface org.hl7.fhir.instance.model.api.IBase
    
    Overrides:
    
    isEmpty in class Element

Modifier and Type	Class	Description
`static class`	`Expression.ExpressionLanguage`
`static class`	`Expression.ExpressionLanguageEnumFactory`

Constructor	Description
`Expression()`	Constructor
`Expression(CodeType language)`	Constructor

Class Expression

Nested Class Summary

Field Summary

Fields inherited from class org.hl7.fhir.r4.model.Element

Constructor Summary

Method Summary

Methods inherited from class org.hl7.fhir.r4.model.Element

Methods inherited from class org.hl7.fhir.r4.model.Base

Methods inherited from class java.lang.Object

Methods inherited from interface org.hl7.fhir.instance.model.api.IBase

Methods inherited from interface org.hl7.fhir.instance.model.api.IBaseElement

Field Detail

description

name

language

expression

reference

Constructor Detail

Expression

Expression

Method Detail

getDescriptionElement

hasDescriptionElement

hasDescription

setDescriptionElement

getDescription

setDescription

getNameElement

hasNameElement

hasName

setNameElement

getName

setName

getLanguageElement

hasLanguageElement

hasLanguage

setLanguageElement

getLanguage

setLanguage

getExpressionElement

hasExpressionElement

hasExpression

setExpressionElement

getExpression

setExpression

getReferenceElement

hasReferenceElement

hasReference

setReferenceElement

getReference

setReference

listChildren

getNamedProperty

getProperty

setProperty

setProperty

makeProperty

getTypesForProperty

addChild

fhirType

copy

copyValues

typedCopy

equalsDeep

equalsShallow

isEmpty