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OPENJPA-51. Committing Catalina's patch. It passes against Derby in my environment as well.

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git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@549882 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Patrick Linskey 2007-06-22 17:08:28 +00:00
parent 578c987ac4
commit be91d228c5
1 changed files with 28 additions and 7 deletions
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35
openjpa-jdbc/src/main/java/org/apache/openjpa/jdbc/sql/SelectImpl.java
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@ -26,6 +26,7 @@ import java.sql.Statement;
import java.sql.Types;
import java.util.AbstractList;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
@ -158,6 +159,13 @@ public class SelectImpl
// from select if this select selects from a tmp table created by another
private SelectImpl _from = null;
private SelectImpl _outer = null;
// bitSet indicating if an alias is removed from parent select
// bit 0 : correspond to alias 0
// bit 1 : correspond to alias 1, etc.
// if the bit is set, the corresponding alias has been removed from parent
// and recorded under subselect.
private BitSet _removedAliasFromParent = new BitSet(16);
/**
* Helper method to return the proper table alias for the given alias index.
@ -1488,8 +1496,13 @@ public class SelectImpl
private void removeParentJoins(PathJoins pj) {
if (_parent == null)
return;
if (_parent._joins != null && !_parent._joins.isEmpty())
pj.joins().removeAll(_parent._joins.joins());
if (_parent._joins != null && !_parent._joins.isEmpty()) {
boolean removed = false;
if (!_removedAliasFromParent.isEmpty())
removed = _parent._joins.joins().removeAll(pj.joins());
if (!removed)
pj.joins().removeAll(_parent._joins.joins());
}
if (!pj.isEmpty())
_parent.removeParentJoins(pj);
}
@ -1898,9 +1911,15 @@ public class SelectImpl
}
}
if (!fromParent && _parent != null) {
alias = _parent.findAlias(table, key, false, this);
if (alias != null)
boolean removeAliasFromParent = key.toString().contains(":");
alias = _parent.findAlias(table, key, removeAliasFromParent, this);
if (alias != null) {
if (removeAliasFromParent) {
recordTableAlias(table, key, alias);
_removedAliasFromParent.set(alias.intValue());
}
return alias;
}
}
if (_subsels != null) {
SelectImpl sub;
@ -1914,9 +1933,11 @@ public class SelectImpl
if (sub._tables != null)
sub._tables.remove(alias);
} else {
alias = sub.findAlias(table, key, true, null);
if (!fromParent && alias != null)
recordTableAlias(table, key, alias);
if (key instanceof String) {
alias = sub.findAlias(table, key, true, null);
if (!fromParent && alias != null)
recordTableAlias(table, key, alias);
}
}
}
}