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Added a comment that tries to make clear the difference between isVirtual() and isCollection()

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hns 2003-10-24 15:35:31 +00:00
parent 9e8f04aa4a
commit 45d32cc2da
1 changed files with 10 additions and 6 deletions
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16
src/helma/objectmodel/db/Relation.java
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@ -350,7 +350,7 @@ public final class Relation {
cnst.addElement(new Constraint(local, foreign, false)); cnst.addElement(new Constraint(local, foreign, false));
} }
} }
// parse constraints logic // parse constraints logic
if (cnst.size() > 1) { if (cnst.size() > 1) {
String logic = props.getProperty(propName + ".logicalOperator"); String logic = props.getProperty(propName + ".logicalOperator");
@ -366,7 +366,7 @@ public final class Relation {
} else { } else {
logicalOperator = AND; logicalOperator = AND;
} }
} }
/////////////////////////////////////////////////////////////////////////////////////////// ///////////////////////////////////////////////////////////////////////////////////////////
@ -393,7 +393,11 @@ public final class Relation {
} }
/** /**
* Returns true if this Relation describes a collection object property * Returns true if this Relation describes a collection.
* <b>NOTE:</b> this will return true both for collection objects
* (aka virtual nodes) and direct child object relations, so
* isVirtual() should be used to identify relations that define
* <i>collection properties</i>!
*/ */
public boolean isCollection() { public boolean isCollection() {
return reftype == COLLECTION; return reftype == COLLECTION;
@ -443,7 +447,7 @@ public final class Relation {
if (otherType == null) { if (otherType == null) {
return false; return false;
} }
return virtual || return virtual ||
(otherType.isRelational() && accessName != null) || (otherType.isRelational() && accessName != null) ||
(groupby != null) || isComplexReference(); (groupby != null) || isComplexReference();
@ -872,7 +876,7 @@ public final class Relation {
} }
q.append(')'); q.append(')');
} }
/** /**
* *
* *
@ -896,7 +900,7 @@ public final class Relation {
if (filter != null) { if (filter != null) {
appendFilter(q, nonvirtual, prefix); appendFilter(q, nonvirtual, prefix);
} }
return q.toString(); return q.toString();
} }