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EdmiError edmiGetHashedAttrInstanceBN (SdaiModel modelId,
SdaiString entityName,
SdaiString attributeName,
SdaiString attrStringValue,
SdaiInteger attrIntegerValue
SdaiInstance *instance);
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Searched the specified model for the instance id of the instance where the specified attribute has exactly the specified value. The attribute is specified by name via the arguments entityName and attributeName. If the attribute type is of string type use the attrStringValue to specify the attribute value. If the attribute type is of integer type, use the attrIntegerValue to specify the attribute value. This function returns only one instance id which implies that you only should use this function if the attribute value is defined to be unique. If the attribute value may occur in more than one instance, use edmiGetHashedAttrInstancesBN.
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If no attribute hash table is defined for the specified attribute, no sequential search is performed and the function returns an error code.
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Arguments
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| Type | Name | Comment | ||
| SdaiModel | modelId | A numeric modelID that uniquely identifies the model of interest in the EDMdatabase. | The modelID is returned from the functions: sdaiCreateModel , sdaiCreateModelBN , sdaiOpenModelBN , edmiGetModel , edmiGetModelBN , sdaiGetInstanceModel | |
| SdaiString | entityName | Specify the name of the instance type, i.e. the name of the entity that defines the instance type. Entity names are case insensitive. | ||
| SdaiString | attributeName | Specifies the name of the attribute. Attribute names are case insensitive. | ||
| SdaiString | attrStringValue | Specify the searched attribute value if the attribute type is of string type. | attrIntegerValue | Specify the searched attribute value if the attribute type is of integer type.is used to specify the hash table key for hash tables of SdaiString data type |
| SdaiInteger | attrIntegerValue | is used to specify the hash table key for hash tables of SdaiInstance, and EdmPackedDate data types | ||
| SdaiInstance | *instance | Address of the variable where to | reurn return the instance id of the found instance. |
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Return Value
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Options
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Example
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See also
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