{
    "$schema": "./schema.cdm.json",
    "jsonSchemaSemanticVersion": "0.6.0",
    "imports": [
        {
            "uri": "/primitives.cdm.json"
        },
        {
            "uri": "/meanings.cdm.json"
        }
    ],
    "definitions": [
        {
            "traitName": "is.CDM",
            "extendsTrait": "is",
            "elevated": true,
            "explanation": "root trait for information about the CDM itself."
        },
        {
            "traitName": "is.CDM.entityVersion",
            "extendsTrait": "is.CDM",
            "hasParameters": [
                {
                    "name": "versionNumber",
                    "explanation": "semantic version number of the entity",
                    "direction": "both",
                    "required": true,
                    "dataType": "string"
                }
            ],
            "associatedProperties": [
                "version"
            ]
        },
        {
            "traitName": "is.CDM.attributeGroup",
            "extendsTrait": "is.CDM",
            "elevated": true,
            "explanation": "identifies standard groups of attributes in CDM entities.",
            "hasParameters": [
                {
                "name": "groupList",
                "direction": "both",
                "dataType": "entity"
                }
            ],
            "associatedProperties": [
                "cdmSchemas"
            ]
        },
        {
            "entityName": "CdmObject",
            "extendsEntity":"object",
            "exhibitsTraits": [
                {
                    "traitReference" : "is.CDM.entityVersion",
                    "arguments": [
                        {
                            "name": "versionNumber",
                            "value": "0.8"
                        }
                    ]
                } 
                 
            ]
        },
        {
            "entityName": "attributeGroupSet",
            "explanation": "a set of references to attributeGroups",
            "extendsEntity": "reference",
            "hasAttributes": [
                {
                    "name": "attributeGroupReference",
                    "dataType": "attributeGroup",
                    "relationship": "hasA"
                }
            ]
        },
        {
            "entityName": "localizedTable",
            "explanation": "localized text",
            "extendsEntity": "reference",
            "hasAttributes": [
                {
                    "name": "languageTag",
                    "dataType": "languageTag",
                    "relationship": "identifiedBy"
                },
                {
                    "name": "displayText",
                    "dataType": "localizedDisplayText",
                    "relationship": "hasA"
                }
            ]
        },
        {
            "traitName": "is.localized",
            "extendsTrait": "is",
            "explanation": "Associates a list of localized string with an object",
            "hasParameters": [
                {
                    "name": "localizedDisplayText",
                    "dataType": "entity",
                    "explanation": "a reference to the constant entity holding the list of localized text",
                    "direction": "both"
                }
            ]
        },
        {
            "traitName": "is.localized.displayedAs",
            "extendsTrait": "is.localized",
            "explanation": "Holds the list of language specific display text for an object.",
            "associatedProperties": [
                "displayName"
            ]
        },
        {
            "traitName": "is.localized.describedAs",
            "extendsTrait": "is.localized",
            "explanation": "Holds the list of language specific descriptive text for an object.",
            "associatedProperties": [
                "description"
            ]
        },
        {
            "entityName": "listLookupValues",
            "explanation": "a localized list of descriptions for possible values in a listLookup type attribute",
            "extendsEntity": "localizedTable",
            "hasAttributes": [
                {
                    "name": "attributeValue",
                    "dataType": "integer",
                    "relationship": "identifiedBy"
                },
                {
                    "name": "displayOrder",
                    "dataType": "displayOrder",
                    "relationship": "orderedBy"
                }
            ]
        },
        {
            "entityName": "listLookupCorrelatedValues",
            "explanation": "a localized list of descriptions for possible values in a listLookupCorrelated type attribute",
            "extendsEntity": "listLookupValues",
            "hasAttributes": [
                {
                    "name": "correlatedValue",
                    "dataType": "integer",
                    "relationship": "identifiedBy",
                    "explanation": "value for the correlated attribute that corresponds to the associated attributeValue"
                }
            ]
        },
        {
            "traitName": "does.haveDefault",
            "extendsTrait": "does",
            "explanation": "An attribute has a default value",
            "hasParameters": [
                {
                    "name": "default",
                    "dataType": "any",
                    "required": true,
                    "direction": "both"
                }
            ],
            "associatedProperties": [
                "defaultValue"
            ]
        },
        {
            "traitName": "is.nullable",
            "extendsTrait": "is",
            "explanation": "The attribute value may be set to NULL.",
            "associatedProperties": [
                "isNullable"
            ]
        },
        {
            "traitName": "is.readOnly",
            "extendsTrait": "is",
            "associatedProperties": [
                "isReadOnly"
            ]
        },
        {
            "traitName": "is.requiredAtLevel",
            "extendsTrait": "is",
            "explanation": "The requirement level for setting values into this attribute in CDS for Applications or for including this attribute in entities created in CDS for Analytics",
            "hasParameters": [
                {
                    "name": "level",
                    "dataType": "string",
                    "required": true,
                    "direction": "both",
                    "explanation": "values can be: 'systemrequired', 'required', 'recommended', 'none'"
                }
            ]
        },
        {
            "traitName": "is.constrained",
            "extendsTrait": "is",
            "explanation": "maximum length or value constraints",
            "hasParameters": [
                {
                    "name": "maximumLength",
                    "dataType": "integer",
                    "direction": "both"
                },
                {
                    "name": "minimumValue",
                    "dataType": "decimal",
                    "direction": "both"
                },
                {
                    "name": "maximumValue",
                    "dataType": "decimal",
                    "direction": "both"
                }
            ],
            "associatedProperties": [
                "maximumValue",
                "minimumValue",
                "maximumLength"
            ]
        },
        {
            "traitName": "is.constrainedList",
            "extendsTrait" : "is",
            "explanation": "the values of an attribute are taken from or looked up from a fixed list of possibilities",
            "associatedProperties": [
                "valueConstrainedToList"
            ]
        },
        {
            "traitName": "means.entityState",
            "extendsTrait": "does.elevateAttribute",
            "explanation": "the attribute represents the current state of the entity."
        },
        {
            "relationshipName": "representsStateWith",
            "extendsRelationship": "hasA",
            "explanation": "the related attribute describes the current state of the entity",
            "exhibitsTraits": [
                "means.entityState"
            ]
        },
        {
            "traitName": "is.correlatedWith",
            "extendsTrait": "is",
            "explanation": "the attribute value is correlated with the sourceAttribute",
            "hasParameters": [
                {
                    "name": "sourceAttribute",
                    "dataType": "attributeName",
                    "direction": "both",
                    "required": true
                }
            ]
        },
        {
            "relationshipName": "representsCorrelatedStatusWith",
            "extendsRelationship": "hasA",
            "explanation": "the related attribute describes the current status of the entity in its current state",
            "exhibitsTraits": [
                "is.correlatedWith"
            ]
        },
        {
            "dataTypeName": "listLookup",
            "extendsDataType": "integer",
            "explanation": "One integer value from a defined list of possibilities",
            "exhibitsTraits": [
                "does.haveDefault",
                "does.addSupportingAttribute",
                "is.constrainedList"
            ]
        },
        {
            "dataTypeName": "listLookupMultiple",
            "extendsDataType": "string",
            "explanation": "A set of one or more values from a defined list of possibilities",
            "exhibitsTraits": [
                "does.haveDefault",
                "does.addSupportingAttribute",
                "means.content.text.CSV",
                "is.constrainedList"
            ]
        },
        {
            "traitName": "is.calculationOf",
            "extendsTrait": "is.correlatedWith",
            "explanation": "the attribute value is the result of a calculation on the sourceAttribute"
        }
    ]
}