diff options
Diffstat (limited to 'src/main/java/com/amazon/carbonado')
3 files changed, 64 insertions, 20 deletions
diff --git a/src/main/java/com/amazon/carbonado/filter/BinaryOpFilter.java b/src/main/java/com/amazon/carbonado/filter/BinaryOpFilter.java index 23797a2..b1cb970 100644 --- a/src/main/java/com/amazon/carbonado/filter/BinaryOpFilter.java +++ b/src/main/java/com/amazon/carbonado/filter/BinaryOpFilter.java @@ -67,7 +67,7 @@ public abstract class BinaryOpFilter<S extends Storable> extends Filter<S> { if (isBound()) {
return this;
}
- return accept(new Binder<S>(), null);
+ return Binder.doBind(this);
}
@Override
diff --git a/src/main/java/com/amazon/carbonado/filter/Binder.java b/src/main/java/com/amazon/carbonado/filter/Binder.java index 91a03e5..f29e8b3 100644 --- a/src/main/java/com/amazon/carbonado/filter/Binder.java +++ b/src/main/java/com/amazon/carbonado/filter/Binder.java @@ -31,16 +31,36 @@ import com.amazon.carbonado.Storable; * @author Brian S O'Neill
*/
class Binder<S extends Storable> extends Visitor<S, Filter<S>, Object> {
- // Maps PropertyFilter with bind ID zero to PropertyFilter with highest
- // bind ID.
+ static <S extends Storable> Filter<S> doBind(Filter<S> filter) {
+ return doBind(filter, null);
+ }
+
+ private static <S extends Storable> Filter<S> doBind(Filter<S> filter, Binder<S> binder) {
+ binder = new Binder<S>(binder);
+ Filter<S> boundFilter = filter.accept(binder, null);
+ if (binder.isRebindNeeded()) {
+ binder = new Binder<S>(binder);
+ boundFilter = boundFilter.accept(binder, null);
+ }
+ return boundFilter;
+ }
+
+ // Maps PropertyFilter with bind ID zero to PropertyFilter with highest bind
+ // ID. All other mappings track which bindings have been created.
private final Map<PropertyFilter<S>, PropertyFilter<S>> mBindMap;
- Binder() {
- mBindMap = new IdentityHashMap<PropertyFilter<S>, PropertyFilter<S>>();
+ private boolean mNeedsRebind;
+
+ private Binder(Binder<S> binder) {
+ if (binder == null) {
+ mBindMap = new IdentityHashMap<PropertyFilter<S>, PropertyFilter<S>>();
+ } else {
+ mBindMap = binder.mBindMap;
+ }
}
- private Binder(Map<PropertyFilter<S>, PropertyFilter<S>> bindMap) {
- mBindMap = bindMap;
+ public boolean isRebindNeeded() {
+ return mNeedsRebind;
}
@Override
@@ -80,19 +100,42 @@ class Binder<S extends Storable> extends Visitor<S, Filter<S>, Object> { }
@Override
- public Filter<S> visit(PropertyFilter<S> filter, Object param) {
+ public Filter<S> visit(final PropertyFilter<S> filter, Object param) {
if (filter.isBound()) {
+ if (mBindMap.containsKey(filter)) {
+ // Binding was created by this Binder.
+ return filter;
+ }
+ final PropertyFilter<S> zero = PropertyFilter.getCanonical(filter, 0);
+ PropertyFilter<S> highest = mBindMap.get(zero);
+ if (highest == null) {
+ mBindMap.put(zero, filter);
+ } else {
+ // Have already created bindings which clash with existing
+ // bindings.
+ mNeedsRebind = true;
+ if (filter.getBindID() > highest.getBindID()) {
+ mBindMap.put(zero, filter);
+ }
+ }
return filter;
- }
- filter = PropertyFilter.getCanonical(filter, 1);
- PropertyFilter<S> highest = mBindMap.get(filter);
- if (highest == null) {
- highest = filter;
} else {
- highest = PropertyFilter.getCanonical(filter, highest.getBindID() + 1);
+ final PropertyFilter<S> zero;
+ if (filter.getBindID() == 0) {
+ zero = filter;
+ } else {
+ zero = PropertyFilter.getCanonical(filter, 0);
+ }
+ PropertyFilter<S> highest = mBindMap.get(zero);
+ if (highest == null) {
+ highest = PropertyFilter.getCanonical(filter, 1);
+ } else {
+ highest = PropertyFilter.getCanonical(filter, highest.getBindID() + 1);
+ }
+ mBindMap.put(zero, highest);
+ mBindMap.put(highest, highest);
+ return highest;
}
- mBindMap.put(filter, highest);
- return highest;
}
@Override
@@ -100,8 +143,7 @@ class Binder<S extends Storable> extends Visitor<S, Filter<S>, Object> { if (filter.isBound()) {
return filter;
}
- Filter<S> boundJoinedSubFilter =
- filter.getJoinedSubFilter().accept(new Binder<S>(mBindMap), null);
+ Filter<S> boundJoinedSubFilter = doBind(filter.getJoinedSubFilter(), this);
Filter<S>.NotJoined nj =
boundJoinedSubFilter.notJoinedFromAny(filter.getChainedProperty());
if (nj.getRemainderFilter() != null && !(nj.getRemainderFilter().isOpen())) {
diff --git a/src/main/java/com/amazon/carbonado/qe/StandardQuery.java b/src/main/java/com/amazon/carbonado/qe/StandardQuery.java index 1bb03be..e2081d6 100644 --- a/src/main/java/com/amazon/carbonado/qe/StandardQuery.java +++ b/src/main/java/com/amazon/carbonado/qe/StandardQuery.java @@ -220,7 +220,8 @@ public abstract class StandardQuery<S extends Storable> extends AbstractQuery<S> private Query<S> buildAfter(S start, OrderingList<S> orderings) throws FetchException {
Class<S> storableType = getStorableType();
Filter<S> orderFilter = Filter.getClosedFilter(storableType);
- Filter<S> lastSubFilter = Filter.getOpenFilter(storableType);
+ Filter<S> openFilter = Filter.getOpenFilter(storableType);
+ Filter<S> lastSubFilter = openFilter;
Object[] values = new Object[orderings.size()];
@@ -240,7 +241,8 @@ public abstract class StandardQuery<S extends Storable> extends AbstractQuery<S> break;
}
- lastSubFilter = lastSubFilter.and(propertyName, RelOp.EQ).bind();
+ Filter<S> propFilter = openFilter.and(propertyName, RelOp.EQ).bind();
+ lastSubFilter = lastSubFilter.and(propFilter);
}
Query<S> query = this.and(orderFilter);
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