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java.lang.Objectorg.apache.derby.impl.sql.compile.HasVariantValueNodeVisitor
Find out if we have a value node with variant type less than what the caller desires, anywhere below us. Stop traversal as soon as we find one. This is used in two places: one to check the values clause of an insert statement; i.e
insert into
Field Summary | |
private boolean |
hasVariant
|
private boolean |
ignoreParameters
|
private int |
variantType
|
Constructor Summary | |
HasVariantValueNodeVisitor()
Construct a visitor |
|
HasVariantValueNodeVisitor(int variantType,
boolean ignoreParameters)
Construct a visitor. |
Method Summary | |
boolean |
hasVariant()
Indicate whether we found the node in question |
boolean |
skipChildren(Visitable node)
Method that is called to indicate whether we should skip all nodes below this node for traversal. |
boolean |
stopTraversal()
Stop traversal if we found the target node |
Visitable |
visit(Visitable node)
If we have found the target node, we are done. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
private boolean hasVariant
private int variantType
private boolean ignoreParameters
Constructor Detail |
public HasVariantValueNodeVisitor()
public HasVariantValueNodeVisitor(int variantType, boolean ignoreParameters)
variantType
- the type of variance we consider
variantMethod Detail |
public Visitable visit(Visitable node) throws StandardException
node
- the node to process
StandardException
- on errorpublic boolean skipChildren(Visitable node)
Visitor
Differs from stopTraversal() in that it only affects subtrees, rather than the entire traversal.
skipChildren
in interface Visitor
node
- the node to process
public boolean stopTraversal()
stopTraversal
in interface Visitor
public boolean hasVariant()
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