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Add a helper method to create an aggregate function for string #964

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merged 3 commits into from
Jan 16, 2022
Merged

Add a helper method to create an aggregate function for string #964

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d58b741
Add a helper method to create an aggregate function that returns a St…
spelletier Dec 4, 2021
1bd27dc
Make javadoc more clear about the typical usage.
spelletier Jan 8, 2022
78aab07
Make Javadoc examples consistent with the aggregated attribute
hprange Jan 16, 2022
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31 changes: 28 additions & 3 deletions Frameworks/Core/ERExtensions/Sources/er/extensions/eof/ERXEOControlUtilities.java
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Original file line number Diff line number Diff line change
Expand Up @@ -956,9 +956,9 @@ public static Number aggregateFunctionWithQualifier(EOEditingContext ec,
}

/**
* Computes an aggregate function for a given attribute
* Computes an aggregate function for a given string attribute
* restricted by a given qualifier. For instance
* select MAX(AGE) from User where name like 'M*'
* select MAX(age) from User where name like 'M*'
*
* @param ec editing context used for the fetch
* @param entityName name of the entity
Expand All @@ -983,7 +983,32 @@ public static Number aggregateFunctionWithQualifier(EOEditingContext ec,
/**
* Computes an aggregate function for a given attribute
* restricted by a given qualifier. For instance
* select MAX(AGE) from User where name like 'M*'
* select MAX(invoiceNumber) from Invoice where invoiceNumber like 'INV22*'
*
* @param ec editing context used for the fetch
* @param entityName name of the entity
* @param attributeName attribute for the function to be performed on
* @param function name, ie MAX, MIN, AVG, etc.
* @param qualifier to restrict data set
* @return aggregate result of the fuction call
*/
public static String aggregateStringWithQualifier(EOEditingContext ec,
String entityName,
String attributeName,
String function,
EOQualifier qualifier) {
String string = null;
Object obj = _aggregateFunctionWithQualifier(ec, entityName, attributeName, function, String.class, null, qualifier);
if (obj instanceof String) {
string = (String)obj;
}
return string;
}

/**
* Computes an aggregate function for a given attribute
* restricted by a given qualifier. For instance
* select MAX(birthdate) from User where name like 'M*'
*
* @param ec editing context used for the fetch
* @param entityName name of the entity
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