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io.datakernel.aggregation.AggregationPredicates Maven / Gradle / Ivy
/*
* Copyright (C) 2015 SoftIndex LLC.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.datakernel.aggregation;
import io.datakernel.aggregation.fieldtype.FieldType;
import io.datakernel.codegen.Expression;
import io.datakernel.codegen.Expressions;
import io.datakernel.codegen.PredicateDef;
import io.datakernel.codegen.VarField;
import java.util.*;
import java.util.regex.Pattern;
import static io.datakernel.codegen.Expressions.*;
import static io.datakernel.util.CollectionUtils.first;
import static io.datakernel.util.Preconditions.checkState;
import static java.util.Arrays.asList;
import static java.util.Collections.*;
public class AggregationPredicates {
private AggregationPredicates() {
}
private static class PredicateSimplifierKey {
private final Class leftType;
private final Class rightType;
private PredicateSimplifierKey(Class leftType, Class rightType) {
this.leftType = leftType;
this.rightType = rightType;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateSimplifierKey that = (PredicateSimplifierKey) o;
if (!leftType.equals(that.leftType)) return false;
return rightType.equals(that.rightType);
}
@Override
public int hashCode() {
int result = leftType.hashCode();
result = 31 * result + rightType.hashCode();
return result;
}
}
private interface PredicateSimplifier {
AggregationPredicate simplifyAnd(L left, R right);
}
private final static Map, PredicateSimplifier> simplifiers = new HashMap<>();
private static void register(Class leftType, Class rightType, PredicateSimplifier operation) {
PredicateSimplifierKey keyLeftRight = new PredicateSimplifierKey<>(leftType, rightType);
checkState(!simplifiers.containsKey(keyLeftRight));
simplifiers.put(keyLeftRight, operation);
if (!rightType.equals(leftType)) {
PredicateSimplifierKey keyRightLeft = new PredicateSimplifierKey<>(rightType, leftType);
checkState(!simplifiers.containsKey(keyRightLeft));
simplifiers.put(keyRightLeft, (PredicateSimplifier) (right, left) -> operation.simplifyAnd(left, right));
}
}
static {
PredicateSimplifier simplifierAlwaysFalse = new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateAlwaysFalse left, AggregationPredicate right) {
return left;
}
};
register(PredicateAlwaysFalse.class, PredicateAlwaysFalse.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateAlwaysTrue.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateNot.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateEq.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateNotEq.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateLe.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateGe.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateLt.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateGt.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateHas.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateBetween.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateRegexp.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateAnd.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateOr.class, simplifierAlwaysFalse);
register(PredicateAlwaysFalse.class, PredicateIn.class, simplifierAlwaysFalse);
PredicateSimplifier simplifierAlwaysTrue = new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateAlwaysTrue left, AggregationPredicate right) {
return right;
}
};
register(PredicateAlwaysTrue.class, PredicateAlwaysTrue.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateNot.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateEq.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateNotEq.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateLe.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateGe.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateLt.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateGt.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateHas.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateBetween.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateRegexp.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateAnd.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateOr.class, simplifierAlwaysTrue);
register(PredicateAlwaysTrue.class, PredicateIn.class, simplifierAlwaysTrue);
PredicateSimplifier simplifierNot = new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNot left, AggregationPredicate right) {
if (left.predicate.equals(right))
return alwaysFalse();
return null;
}
};
register(PredicateNot.class, PredicateNot.class, simplifierNot);
register(PredicateNot.class, PredicateHas.class, simplifierNot);
register(PredicateNot.class, PredicateBetween.class, simplifierNot);
register(PredicateNot.class, PredicateRegexp.class, simplifierNot);
register(PredicateNot.class, PredicateAnd.class, simplifierNot);
register(PredicateNot.class, PredicateOr.class, simplifierNot);
register(PredicateNot.class, PredicateGe.class, simplifierNot);
register(PredicateNot.class, PredicateLe.class, simplifierNot);
register(PredicateNot.class, PredicateGt.class, simplifierNot);
register(PredicateNot.class, PredicateLt.class, simplifierNot);
register(PredicateNot.class, PredicateIn.class, simplifierNot);
register(PredicateHas.class, PredicateHas.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateHas left, PredicateHas right) {
return left.key.equals(right.key) ? left : null;
}
});
PredicateSimplifier simplifierHas = new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateHas left, AggregationPredicate right) {
return right.getDimensions().contains(left.getKey()) ? right : null;
}
};
register(PredicateHas.class, PredicateEq.class, simplifierHas);
register(PredicateHas.class, PredicateNotEq.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateHas left, PredicateNotEq right) {
return (left.key.equals(right.key)) ? left : null;
}
});
register(PredicateHas.class, PredicateLe.class, simplifierHas);
register(PredicateHas.class, PredicateGe.class, simplifierHas);
register(PredicateHas.class, PredicateLt.class, simplifierHas);
register(PredicateHas.class, PredicateGt.class, simplifierHas);
register(PredicateHas.class, PredicateBetween.class, simplifierHas);
register(PredicateHas.class, PredicateAnd.class, simplifierHas);
register(PredicateHas.class, PredicateOr.class, simplifierHas);
register(PredicateHas.class, PredicateIn.class, simplifierHas);
register(PredicateEq.class, PredicateEq.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateEq right) {
if (!left.key.equals(right.key))
return null;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateNotEq.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateNotEq right) {
if (!left.key.equals(right.key))
return null;
if (!left.value.equals(right.value))
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateLe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateLe right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) >= 0)
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateGe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateGe right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) <= 0)
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateLt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateLt right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) > 0)
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateGt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateGt right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) < 0)
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateBetween right) {
if (!left.key.equals(right.key))
return null;
if (right.from.compareTo(left.value) <= 0 && right.to.compareTo(left.value) >= 0)
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateRegexp.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateRegexp right) {
if (!left.key.equals(right.key))
return null;
Pattern p = Pattern.compile(right.regexp);
if (p.matcher(left.key).matches())
return left;
return alwaysFalse();
}
});
register(PredicateEq.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateEq left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (right.values.contains(left.value))
return left;
return alwaysFalse();
}
});
register(PredicateNotEq.class, PredicateNotEq.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNotEq left, PredicateNotEq right) {
if (!left.key.equals(right.key))
return null;
if (left.value.equals(right.value))
return left;
return null;
}
});
register(PredicateNotEq.class, PredicateLe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNotEq left, PredicateLe right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) < 0)
return right;
if (right.value.compareTo(left.value) == 0)
return lt(left.key, right.value);
return null;
}
});
register(PredicateNotEq.class, PredicateGe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNotEq left, PredicateGe right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) > 0)
return right;
if (right.value.compareTo(left.value) == 0)
return gt(left.key, right.value);
return null;
}
});
register(PredicateNotEq.class, PredicateLt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNotEq left, PredicateLt right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) <= 0)
return right;
return null;
}
});
register(PredicateNotEq.class, PredicateGt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNotEq left, PredicateGt right) {
if (!left.key.equals(right.key))
return null;
if (right.value.compareTo(left.value) >= 0)
return right;
return null;
}
});
register(PredicateNotEq.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateNotEq left, PredicateBetween right) {
if (!right.key.equals(left.key))
return null;
if (right.from.compareTo(left.value) > 0 && right.to.compareTo(left.value) > 0)
return right;
if (right.from.compareTo(left.value) < 0 && right.to.compareTo(left.value) < 0)
return right;
return null;
}
});
register(PredicateLe.class, PredicateLe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLe left, PredicateLe right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) <= 0)
return right;
return left;
}
});
register(PredicateLe.class, PredicateGe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLe left, PredicateGe right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.value) < 0)
return alwaysFalse();
if (left.value.compareTo(right.value) > 0)
return between(right.key, right.value, left.value);
if (left.value.compareTo(right.value) == 0)
return eq(left.key, left.value);
return null;
}
});
register(PredicateLe.class, PredicateLt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLe left, PredicateLt right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) <= 0)
return right;
return left;
}
});
register(PredicateLe.class, PredicateGt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLe left, PredicateGt right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.value) <= 0)
return alwaysFalse();
return null;
}
});
register(PredicateLe.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLe left, PredicateBetween right) {
if (!right.key.equals(left.key))
return null;
if (right.from.compareTo(left.value) > 0)
return alwaysFalse();
if (right.from.compareTo(left.value) == 0)
return eq(left.key, right.from);
if (right.to.compareTo(left.value) <= 0)
return right;
return between(right.key, right.from, left.value).simplify();
}
});
register(PredicateLe.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLe left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.values.last()) >= 0)
return right;
if (left.value.compareTo(right.values.first()) < 0)
return alwaysFalse();
SortedSet subset = new TreeSet(right.values.headSet(left.value));
if (right.values.contains(left.value)) subset.add(left.value);
return in(left.key, subset);
}
});
register(PredicateGe.class, PredicateGe.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGe left, PredicateGe right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) >= 0)
return right;
return left;
}
});
register(PredicateGe.class, PredicateLt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGe left, PredicateLt right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) <= 0)
return alwaysFalse();
return null;
}
});
register(PredicateGe.class, PredicateGt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGe left, PredicateGt right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) >= 0)
return gt(right.key, right.value);
return left;
}
});
register(PredicateGe.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGe left, PredicateBetween right) {
if (!right.key.equals(left.key))
return null;
if (right.to.compareTo(left.value) < 0)
return alwaysFalse();
if (right.to.compareTo(left.value) == 0)
return eq(right.key, right.to);
if (right.from.compareTo(left.value) >= 0)
return right;
return between(right.key, left.value, right.to).simplify();
}
});
register(PredicateGe.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGe left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.values.first()) <= 0)
return right;
if (left.value.compareTo(right.values.last()) > 0)
return alwaysFalse();
return in(left.key, new TreeSet(right.values.tailSet(left.value)));
}
});
register(PredicateLt.class, PredicateLt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLt left, PredicateLt right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) >= 0)
return left;
return right;
}
});
register(PredicateLt.class, PredicateGt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLt left, PredicateGt right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.value) <= 0)
return alwaysFalse();
return null;
}
});
register(PredicateLt.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLt left, PredicateBetween right) {
if (!right.key.equals(left.key))
return null;
if (right.from.compareTo(left.value) >= 0)
return alwaysFalse();
if (right.to.compareTo(left.value) < 0)
return right;
return null;
}
});
register(PredicateLt.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateLt left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.values.last()) > 0)
return right;
if (left.value.compareTo(right.values.first()) < 0)
return alwaysFalse();
return in(left.key, new TreeSet(right.values.subSet(right.values.first(), left.value)));
}
});
register(PredicateGt.class, PredicateGt.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGt left, PredicateGt right) {
if (!right.key.equals(left.key))
return null;
if (right.value.compareTo(left.value) >= 0)
return right;
return left;
}
});
register(PredicateGt.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGt left, PredicateBetween right) {
if (!right.key.equals(left.key))
return null;
if (right.to.compareTo(left.value) <= 0)
return alwaysFalse();
if (right.from.compareTo(left.value) > 0)
return right;
return null;
}
});
register(PredicateGt.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateGt left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (left.value.compareTo(right.values.first()) < 0)
return right;
if (left.value.compareTo(right.values.last()) >= 0)
return alwaysFalse();
SortedSet subset = right.values.tailSet(left.value);
subset.remove(left.value);
return in(right.key, subset);
}
});
register(PredicateBetween.class, PredicateBetween.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateBetween left, PredicateBetween right) {
if (!left.key.equals(right.key))
return null;
Comparable from = left.from.compareTo(right.from) >= 0 ? left.from : right.from;
Comparable to = left.to.compareTo(right.to) <= 0 ? left.to : right.to;
return between(left.key, from, to).simplify();
}
});
register(PredicateBetween.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateBetween left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (left.from.compareTo(right.values.first()) > 0 && left.to.compareTo(right.values.last()) > 0)
return left;
return null;
}
});
register(PredicateIn.class, PredicateIn.class, new PredicateSimplifier() {
@Override
public AggregationPredicate simplifyAnd(PredicateIn left, PredicateIn right) {
if (!left.key.equals(right.key))
return null;
if (left.values.equals(right.values))
return left.values.size() == 1 ? eq(left.getKey(), left.values.first()) : left;
SortedSet values = left.values;
values.retainAll(right.values);
if (values.size() == 1)
return eq(left.key, left.values.first());
if (!left.values.isEmpty())
return in(left.key, left.values);
return alwaysFalse();
}
});
}
@SuppressWarnings("unchecked")
private static AggregationPredicate simplifyAnd(AggregationPredicate left, AggregationPredicate right) {
if (left.equals(right))
return left;
PredicateSimplifierKey key = new PredicateSimplifierKey(left.getClass(), right.getClass());
PredicateSimplifier simplifier = (PredicateSimplifier) simplifiers.get(key);
if (simplifier == null)
return null;
return simplifier.simplifyAnd(left, right);
}
public static final class PredicateAlwaysFalse implements AggregationPredicate {
private static final PredicateAlwaysFalse instance = new PredicateAlwaysFalse();
private PredicateAlwaysFalse() {
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return emptySet();
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return Expressions.alwaysFalse();
}
@Override
public String toString() {
return "FALSE";
}
}
public static final class PredicateAlwaysTrue implements AggregationPredicate {
private static final PredicateAlwaysTrue instance = new PredicateAlwaysTrue();
private PredicateAlwaysTrue() {
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return emptySet();
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return Expressions.alwaysTrue();
}
@Override
public String toString() {
return "TRUE";
}
}
public static final class PredicateNot implements AggregationPredicate {
private final AggregationPredicate predicate;
private PredicateNot(AggregationPredicate predicate) {
this.predicate = predicate;
}
public AggregationPredicate getPredicate() {
return predicate;
}
@Override
public AggregationPredicate simplify() {
if (predicate instanceof PredicateNot)
return ((PredicateNot) predicate).predicate.simplify();
if (predicate instanceof PredicateEq)
return new PredicateNotEq(((PredicateEq) this.predicate).key, ((PredicateEq) this.predicate).value);
if (predicate instanceof PredicateNotEq)
return new PredicateEq(((PredicateNotEq) this.predicate).key, ((PredicateNotEq) this.predicate).value);
return not(predicate.simplify());
}
@Override
public Set getDimensions() {
return predicate.getDimensions();
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return Expressions.not(predicate.createPredicateDef(record, fields));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateNot that = (PredicateNot) o;
return predicate.equals(that.predicate);
}
@Override
public int hashCode() {
return predicate.hashCode();
}
@Override
public String toString() {
return "NOT " + predicate;
}
}
public static final class PredicateEq implements AggregationPredicate {
final String key;
final Object value;
private PredicateEq(String key, Object value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public Object getValue() {
return value;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return singletonMap(key, value);
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return (fields.get(key) == null)
? Expressions.isNull(field(record, key.replace('.', '$')))
: Expressions.and(isNotNull(field(record, key.replace('.', '$')), fields.get(key)),
cmpEq(field(record, key.replace('.', '$')), value(toInternalValue(fields, key, value))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateEq that = (PredicateEq) o;
if (!key.equals(that.key)) return false;
return value != null ? value.equals(that.value) : that.value == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString() {
return key + '=' + value;
}
}
public static final class PredicateNotEq implements AggregationPredicate {
final String key;
final Object value;
private PredicateNotEq(String key, Object value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public Object getValue() {
return value;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return (fields.get(key) == null)
? Expressions.isNotNull(field(record, key.replace('.', '$')))
: Expressions.or(isNull(field(record, key.replace('.', '$')), fields.get(key)),
cmpNe(field(record, key.replace('.', '$')), value(toInternalValue(fields, key, value))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateNotEq that = (PredicateNotEq) o;
if (!key.equals(that.key)) return false;
return value != null ? value.equals(that.value) : that.value == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString() {
return key + "!=" + value;
}
}
public static final class PredicateLe implements AggregationPredicate {
final String key;
final Comparable value;
private PredicateLe(String key, Comparable value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public Object getValue() {
return value;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
VarField field = field(record, key.replace('.', '$'));
return Expressions.and(isNotNull(field, fields.get(key)),
cmpLe(field, value(toInternalValue(fields, key, value))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateLe that = (PredicateLe) o;
if (!key.equals(that.key)) return false;
return value != null ? value.equals(that.value) : that.value == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString() {
return key + "<=" + value;
}
}
public static final class PredicateLt implements AggregationPredicate {
final String key;
final Comparable value;
private PredicateLt(String key, Comparable value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public Object getValue() {
return value;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
VarField field = field(record, key.replace('.', '$'));
return Expressions.and(isNotNull(field, fields.get(key)),
cmpLt(field, value(toInternalValue(fields, key, value))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateLt that = (PredicateLt) o;
if (!key.equals(that.key)) return false;
return value != null ? value.equals(that.value) : that.value == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString() {
return key + "<" + value;
}
}
public static final class PredicateGe implements AggregationPredicate {
final String key;
final Comparable value;
private PredicateGe(String key, Comparable value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public Comparable getValue() {
return value;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
VarField field = field(record, key.replace('.', '$'));
return Expressions.and(isNotNull(field, fields.get(key)),
cmpGe(field, value(toInternalValue(fields, key, value))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateGe that = (PredicateGe) o;
if (!key.equals(that.key)) return false;
return value != null ? value.equals(that.value) : that.value == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString() {
return key + ">=" + value;
}
}
public static final class PredicateGt implements AggregationPredicate {
final String key;
final Comparable value;
private PredicateGt(String key, Comparable value) {
this.key = key;
this.value = value;
}
public String getKey() {
return key;
}
public Comparable getValue() {
return value;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
VarField field = field(record, key.replace('.', '$'));
return Expressions.and(isNotNull(field, fields.get(key)),
cmpGt(field, value(toInternalValue(fields, key, value))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateGt that = (PredicateGt) o;
if (!key.equals(that.key)) return false;
return value != null ? value.equals(that.value) : that.value == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (value != null ? value.hashCode() : 0);
return result;
}
@Override
public String toString() {
return key + ">" + value;
}
}
public static final class PredicateHas implements AggregationPredicate {
final String key;
private PredicateHas(String key) {
this.key = key;
}
public String getKey() {
return key;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return emptySet();
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@SuppressWarnings("unchecked")
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return fields.containsKey(key) ? Expressions.alwaysTrue() : Expressions.alwaysFalse();
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateHas that = (PredicateHas) o;
if (!key.equals(that.key)) return false;
return true;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result;
return result;
}
@Override
public String toString() {
return "HAS " + key;
}
}
public static final class PredicateRegexp implements AggregationPredicate {
final String key;
final String regexp;
private PredicateRegexp(String key, String regexp) {
this.key = key;
this.regexp = regexp;
}
public String getKey() {
return key;
}
public String getRegexp() {
return regexp;
}
@Override
public AggregationPredicate simplify() {
return this;
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
Pattern pattern = Pattern.compile(regexp);
return Expressions.and(cmpNe(value(false), call(call(value(pattern), "matcher",
cast(callStatic(String.class, "valueOf", cast(field(record, key.replace('.', '$')), Object.class)),
CharSequence.class)), "matches")));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateRegexp that = (PredicateRegexp) o;
if (!key.equals(that.key)) return false;
return regexp.equals(that.regexp);
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + regexp.hashCode();
return result;
}
@Override
public String toString() {
return key + " " + regexp;
}
}
public static final class PredicateIn implements AggregationPredicate {
final String key;
final SortedSet values;
PredicateIn(String key, SortedSet values) {
this.key = key;
this.values = values;
}
public String getKey() {
return key;
}
public Set getValues() {
return values;
}
@Override
public AggregationPredicate simplify() {
return (values.iterator().hasNext()) ? this : alwaysFalse();
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
return Expressions.and(cmpNe(value(false), call(value(values), "contains",
cast(field(record, key.replace('.', '$')), Object.class))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateIn that = (PredicateIn) o;
if (!key.equals(that.key)) return false;
return values != null ? values.equals(that.values) : that.values == null;
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + (values != null ? values.hashCode() : 0);
return result;
}
@Override
public String toString() {
StringJoiner joiner = new StringJoiner(", ");
for (Object value : values) joiner.add(value.toString());
return "" + key + " IN " + joiner.toString();
}
}
public static final class PredicateBetween implements AggregationPredicate {
final String key;
final Comparable from;
final Comparable to;
PredicateBetween(String key, Comparable from, Comparable to) {
this.key = key;
this.from = from;
this.to = to;
}
public String getKey() {
return key;
}
public Comparable getFrom() {
return from;
}
public Comparable getTo() {
return to;
}
@Override
public AggregationPredicate simplify() {
return (from.compareTo(to) > 0) ? alwaysFalse() : (from.equals(to) ? AggregationPredicates.eq(key, from) : this);
}
@Override
public Set getDimensions() {
return singleton(key);
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
VarField field = field(record, key.replace('.', '$'));
return Expressions.and(isNotNull(field, fields.get(key)),
cmpGe(field, value(toInternalValue(fields, key, from))),
cmpLe(field, value(toInternalValue(fields, key, to))));
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateBetween that = (PredicateBetween) o;
if (!key.equals(that.key)) return false;
if (!from.equals(that.from)) return false;
return to.equals(that.to);
}
@Override
public int hashCode() {
int result = key.hashCode();
result = 31 * result + from.hashCode();
result = 31 * result + to.hashCode();
return result;
}
@Override
public String toString() {
return "" + key + " BETWEEN " + from + " AND " + to;
}
}
public static final class PredicateAnd implements AggregationPredicate {
final List predicates;
private PredicateAnd(List predicates) {
this.predicates = predicates;
}
public List getPredicates() {
return predicates;
}
@Override
public AggregationPredicate simplify() {
Set simplifiedPredicates = new LinkedHashSet<>();
for (AggregationPredicate predicate : predicates) {
AggregationPredicate simplified = predicate.simplify();
if (simplified instanceof PredicateAnd) {
simplifiedPredicates.addAll(((PredicateAnd) simplified).predicates);
} else {
simplifiedPredicates.add(simplified);
}
}
boolean simplified;
do {
simplified = false;
HashSet newPredicates = new HashSet<>();
L:
for (AggregationPredicate newPredicate : simplifiedPredicates) {
for (AggregationPredicate simplifiedPredicate : newPredicates) {
AggregationPredicate maybeSimplified = simplifyAnd(newPredicate, simplifiedPredicate);
if (maybeSimplified != null) {
newPredicates.remove(simplifiedPredicate);
newPredicates.add(maybeSimplified);
simplified = true;
continue L;
}
}
newPredicates.add(newPredicate);
}
simplifiedPredicates = newPredicates;
} while (simplified);
return simplifiedPredicates.isEmpty() ?
alwaysTrue() :
simplifiedPredicates.size() == 1 ?
first(simplifiedPredicates) :
and(new ArrayList<>(simplifiedPredicates));
}
@Override
public Set getDimensions() {
Set result = new HashSet<>();
for (AggregationPredicate predicate : predicates) {
result.addAll(predicate.getDimensions());
}
return result;
}
@Override
public Map getFullySpecifiedDimensions() {
Map result = new HashMap<>();
for (AggregationPredicate predicate : predicates) {
result.putAll(predicate.getFullySpecifiedDimensions());
}
return result;
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
List predicateDefs = new ArrayList<>();
for (AggregationPredicate predicate : predicates) {
predicateDefs.add(predicate.createPredicateDef(record, fields));
}
return Expressions.and(predicateDefs);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateAnd that = (PredicateAnd) o;
return new HashSet<>(predicates).equals(new HashSet<>(that.predicates));
}
@Override
public int hashCode() {
return new HashSet<>(predicates).hashCode();
}
@Override
public String toString() {
StringJoiner joiner = new StringJoiner(" AND ");
for (AggregationPredicate predicate : predicates) joiner.add(predicate.toString());
return "(" + joiner.toString() + ")";
}
}
public static final class PredicateOr implements AggregationPredicate {
final List predicates;
PredicateOr(List predicates) {
this.predicates = predicates;
}
public List getPredicates() {
return predicates;
}
@Override
public AggregationPredicate simplify() {
Set simplifiedPredicates = new LinkedHashSet<>();
for (AggregationPredicate predicate : predicates) {
AggregationPredicate simplified = predicate.simplify();
if (simplified instanceof PredicateOr) {
simplifiedPredicates.addAll(((PredicateOr) simplified).predicates);
} else {
simplifiedPredicates.add(simplified);
}
}
return simplifiedPredicates.isEmpty() ?
alwaysTrue() :
simplifiedPredicates.size() == 1 ?
first(simplifiedPredicates) :
or(new ArrayList<>(simplifiedPredicates));
}
@Override
public Set getDimensions() {
Set result = new HashSet<>();
for (AggregationPredicate predicate : predicates) {
result.addAll(predicate.getDimensions());
}
return result;
}
@Override
public Map getFullySpecifiedDimensions() {
return emptyMap();
}
@Override
public PredicateDef createPredicateDef(Expression record, Map fields) {
List predicateDefs = new ArrayList<>();
for (AggregationPredicate predicate : predicates) {
predicateDefs.add(predicate.createPredicateDef(record, fields));
}
return Expressions.or(predicateDefs);
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
PredicateOr that = (PredicateOr) o;
return new HashSet<>(predicates).equals(new HashSet<>(that.predicates));
}
@Override
public int hashCode() {
return new HashSet<>(predicates).hashCode();
}
@Override
public String toString() {
StringJoiner joiner = new StringJoiner(" OR ");
for (AggregationPredicate predicate : predicates) joiner.add(predicate.toString());
return "(" + joiner.toString() + ")";
}
}
public static AggregationPredicate alwaysTrue() {
return PredicateAlwaysTrue.instance;
}
public static AggregationPredicate alwaysFalse() {
return PredicateAlwaysFalse.instance;
}
public static AggregationPredicate not(AggregationPredicate predicate) {
return new PredicateNot(predicate);
}
public static AggregationPredicate and(List predicates) {
return new PredicateAnd(predicates);
}
public static AggregationPredicate and(AggregationPredicate... predicates) {
return and(asList(predicates));
}
public static AggregationPredicate or(List predicates) {
return new PredicateOr(predicates);
}
public static AggregationPredicate or(AggregationPredicate... predicates) {
return or(asList(predicates));
}
public static AggregationPredicate eq(String key, Object value) {
return new PredicateEq(key, value);
}
public static AggregationPredicate notEq(String key, Object value) {
return new PredicateNotEq(key, value);
}
public static AggregationPredicate ge(String key, Comparable value) {
return new PredicateGe(key, value);
}
public static AggregationPredicate le(String key, Comparable value) {
return new PredicateLe(key, value);
}
public static AggregationPredicate gt(String key, Comparable value) {
return new PredicateGt(key, value);
}
public static AggregationPredicate lt(String key, Comparable value) {
return new PredicateLt(key, value);
}
public static AggregationPredicate has(String key) {
return new PredicateHas(key);
}
public static AggregationPredicate in(String key, Collection values) {
return values.size() == 1 ? new PredicateEq(key, values.toArray()[0]) : new PredicateIn(key, new TreeSet(values));
}
public static AggregationPredicate in(String key, Comparable... values) {
return values.length == 1 ? new PredicateEq(key, values[0]) : new PredicateIn(key, new TreeSet(asList(values)));
}
public static AggregationPredicate regexp(String key, String pattern) {
return new PredicateRegexp(key, pattern);
}
public static AggregationPredicate between(String key, Comparable from, Comparable to) {
return new PredicateBetween(key, from, to);
}
public static final class RangeScan {
private final PrimaryKey from;
private final PrimaryKey to;
private RangeScan(PrimaryKey from, PrimaryKey to) {
this.from = from;
this.to = to;
}
public static RangeScan noScan() {
return new RangeScan(null, null);
}
public static RangeScan fullScan() {
return new RangeScan(PrimaryKey.ofArray(), PrimaryKey.ofArray());
}
public static RangeScan rangeScan(PrimaryKey from, PrimaryKey to) {
return new RangeScan(from, to);
}
public boolean isNoScan() {
return from == null;
}
public boolean isFullScan() {
return from.size() == 0;
}
public boolean isRangeScan() {
return !isNoScan() && !isFullScan();
}
public PrimaryKey getFrom() {
checkState(!isNoScan());
return from;
}
public PrimaryKey getTo() {
checkState(!isNoScan());
return to;
}
}
private static PredicateDef isNotNull(Expression field, FieldType fieldType) {
return (fieldType != null && fieldType.getInternalDataType().isPrimitive())
? Expressions.alwaysTrue()
: Expressions.isNotNull(field);
}
private static PredicateDef isNull(Expression field, FieldType fieldType) {
return (fieldType != null && fieldType.getInternalDataType().isPrimitive())
? Expressions.alwaysFalse()
: Expressions.isNull(field);
}
private static Object toInternalValue(Map fields, String key, Object value) {
return fields.containsKey(key) ? fields.get(key).toInternalValue(value) : value;
}
public static RangeScan toRangeScan(AggregationPredicate predicate, List primaryKey, Map fields) {
predicate = predicate.simplify();
if (predicate == alwaysFalse())
return RangeScan.noScan();
List conjunctions = new ArrayList<>();
if (predicate instanceof PredicateAnd) {
conjunctions.addAll(((PredicateAnd) predicate).predicates);
} else {
conjunctions.add(predicate);
}
List from = new ArrayList<>();
List to = new ArrayList<>();
L:
for (String key : primaryKey) {
for (int j = 0; j < conjunctions.size(); j++) {
AggregationPredicate conjunction = conjunctions.get(j);
if (conjunction instanceof PredicateEq && ((PredicateEq) conjunction).key.equals(key)) {
conjunctions.remove(j);
PredicateEq eq = (PredicateEq) conjunction;
from.add(toInternalValue(fields, eq.key, eq.value));
to.add(toInternalValue(fields, eq.key, eq.value));
continue L;
}
if (conjunction instanceof PredicateBetween && ((PredicateBetween) conjunction).key.equals(key)) {
conjunctions.remove(j);
PredicateBetween between = (PredicateBetween) conjunction;
from.add(toInternalValue(fields, between.key, between.from));
to.add(toInternalValue(fields, between.key, between.to));
break L;
}
}
break;
}
return RangeScan.rangeScan(PrimaryKey.ofList(from), PrimaryKey.ofList(to));
}
}
