public class ExpressionAnalyzer
extends java.lang.Object
Constructor and Description |
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ExpressionAnalyzer() |
Modifier and Type | Method and Description |
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static java.util.Set |
getReferencedColumns(Expression expr)
Get the set of data fields the expression is dependent upon.
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static boolean |
hasDependency(Expression expr)
Determine if an expression has a dependency on a data field.
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public static boolean hasDependency(Expression expr)
expr
- the expression to analyzepublic static java.util.Set getReferencedColumns(Expression expr)
expr
- the expression to analyzeCopyright ? 2013 Regents of the University of California