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java.lang.Objectcom.metamatrix.query.sql.LanguageVisitor
com.metamatrix.query.sql.visitor.GroupCollectorVisitor
public class GroupCollectorVisitor
This visitor class will traverse a language object tree and collect all group symbol references it finds. It uses a collection to collect the groups in so different collections will give you different collection properties - for instance, using a Set will remove duplicates.
The easiest way to use this visitor is to call the static methods which create the visitor (and possibly the collection), run the visitor, and get the collection. The public visit() methods should NOT be called directly.
Constructor Summary | |
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GroupCollectorVisitor(java.util.Collection<GroupSymbol> groups)
Construct a new visitor with the specified collection, which should be non-null. |
Method Summary | |
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java.util.Collection<GroupSymbol> |
getGroups()
Get the groups collected by the visitor. |
static java.util.Collection<GroupSymbol> |
getGroups(LanguageObject obj,
boolean removeDuplicates)
Helper to quickly get the groups from obj in a collection. |
static void |
getGroups(LanguageObject obj,
java.util.Collection<GroupSymbol> groups)
Helper to quickly get the groups from obj in the groups collection |
static java.util.Collection<GroupSymbol> |
getGroupsIgnoreInlineViews(LanguageObject obj,
boolean removeDuplicates)
Helper to quickly get the groups from obj in a collection. |
static void |
getGroupsIgnoreInlineViews(LanguageObject obj,
java.util.Collection<GroupSymbol> groups)
Helper to quickly get the groups from obj in the groups collection |
java.util.Collection<GroupSymbol> |
getInlineViewGroups()
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void |
setIgnoreInlineViewGroups(boolean ignoreInlineViewGroups)
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void |
visit(GroupSymbol obj)
Visit a language object and collect symbols. |
void |
visit(Into obj)
|
void |
visit(StoredProcedure obj)
Visit a language object and collect symbols. |
void |
visit(SubqueryFromClause obj)
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Methods inherited from class com.metamatrix.query.sql.LanguageVisitor |
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setAbort, shouldAbort, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public GroupCollectorVisitor(java.util.Collection<GroupSymbol> groups)
groups
- Collection to use for groups
java.lang.IllegalArgumentException
- If groups is nullMethod Detail |
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public java.util.Collection<GroupSymbol> getGroups()
GroupSymbol
public java.util.Collection<GroupSymbol> getInlineViewGroups()
public void setIgnoreInlineViewGroups(boolean ignoreInlineViewGroups)
public void visit(GroupSymbol obj)
visit
in class LanguageVisitor
obj
- Language objectpublic void visit(StoredProcedure obj)
visit
in class LanguageVisitor
obj
- Language objectpublic void visit(Into obj)
visit
in class LanguageVisitor
public void visit(SubqueryFromClause obj)
visit
in class LanguageVisitor
public static void getGroups(LanguageObject obj, java.util.Collection<GroupSymbol> groups)
obj
- Language objectelements
- Collection to collect groups inpublic static java.util.Collection<GroupSymbol> getGroups(LanguageObject obj, boolean removeDuplicates)
obj
- Language objectremoveDuplicates
- True to remove duplicates
GroupSymbol
public static void getGroupsIgnoreInlineViews(LanguageObject obj, java.util.Collection<GroupSymbol> groups)
obj
- Language objectelements
- Collection to collect groups inpublic static java.util.Collection<GroupSymbol> getGroupsIgnoreInlineViews(LanguageObject obj, boolean removeDuplicates)
obj
- Language objectremoveDuplicates
- True to remove duplicates
GroupSymbol
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