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Partly generated model of the fields that represent columns in the
database. Fields can be used to produce special predicates and functions
that contain metadata that Speedment can analyze runtime.
/**
*
* Copyright (c) 2006-2017, Speedment, Inc. All Rights Reserved.
*
* 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 com.speedment.runtime.field.internal;
import com.speedment.runtime.config.identifier.ColumnIdentifier;
import com.speedment.runtime.field.EnumField;
import com.speedment.runtime.field.comparator.FieldComparator;
import com.speedment.runtime.field.comparator.NullOrder;
import com.speedment.runtime.field.internal.comparator.ReferenceFieldComparatorImpl;
import com.speedment.runtime.field.internal.predicate.AlwaysFalsePredicate;
import com.speedment.runtime.field.internal.predicate.reference.ReferenceEqualPredicate;
import com.speedment.runtime.field.internal.predicate.reference.ReferenceInPredicate;
import com.speedment.runtime.field.internal.predicate.reference.ReferenceIsNotNullPredicate;
import com.speedment.runtime.field.internal.predicate.reference.ReferenceIsNullPredicate;
import com.speedment.runtime.field.method.ReferenceGetter;
import com.speedment.runtime.field.method.ReferenceSetter;
import com.speedment.runtime.field.predicate.Inclusion;
import com.speedment.runtime.typemapper.TypeMapper;
import java.util.Collection;
import java.util.EnumSet;
import java.util.function.Function;
import java.util.function.Predicate;
import static java.util.Objects.requireNonNull;
/**
* Default implementation of the {@link EnumField}-interface.
*
* @author Emil Forslund
* @since 3.0.10
*/
public final class EnumFieldImpl>
implements EnumField {
private final ColumnIdentifier identifier;
private final ReferenceGetter getter;
private final ReferenceSetter setter;
private final TypeMapper typeMapper;
private final Function enumToString;
private final Function stringToEnum;
private final Class enumClass;
private final EnumSet constants;
public EnumFieldImpl(ColumnIdentifier identifier,
ReferenceGetter getter,
ReferenceSetter setter,
TypeMapper typeMapper,
Function enumToString,
Function stringToEnum,
Class enumClass) {
this.identifier = requireNonNull(identifier);
this.getter = requireNonNull(getter);
this.setter = requireNonNull(setter);
this.typeMapper = requireNonNull(typeMapper);
this.enumToString = requireNonNull(enumToString);
this.stringToEnum = requireNonNull(stringToEnum);
this.enumClass = requireNonNull(enumClass);
this.constants = EnumSet.allOf(enumClass);
}
////////////////////////////////////////////////////////////////////////////
// Getters //
////////////////////////////////////////////////////////////////////////////
@Override
public Class enumClass() {
return enumClass;
}
@Override
public EnumSet constants() {
return EnumSet.allOf(enumClass);
}
@Override
public ColumnIdentifier identifier() {
return identifier;
}
@Override
public ReferenceSetter setter() {
return setter;
}
@Override
public ReferenceGetter getter() {
return getter;
}
@Override
public TypeMapper typeMapper() {
return typeMapper;
}
@Override
public Function stringToEnum() {
return stringToEnum;
}
@Override
public Function enumToString() {
return enumToString;
}
@Override
public boolean isUnique() {
return false;
}
////////////////////////////////////////////////////////////////////////////
// Comparators //
////////////////////////////////////////////////////////////////////////////
@Override
public FieldComparator comparator() {
return new ReferenceFieldComparatorImpl<>(this, NullOrder.LAST);
}
@Override
public FieldComparator comparatorNullFieldsFirst() {
return new ReferenceFieldComparatorImpl<>(this, NullOrder.FIRST);
}
@Override
public FieldComparator comparatorNullFieldsLast() {
return comparator();
}
////////////////////////////////////////////////////////////////////////////
// Predicates //
////////////////////////////////////////////////////////////////////////////
@Override
public Predicate isNull() {
return new ReferenceIsNullPredicate<>(this);
}
@Override
public Predicate isNotNull() {
return new ReferenceIsNotNullPredicate<>(this);
}
@Override
public Predicate equal(E value) {
return toEntityPredicate(e -> e != null && e.compareTo(value) == 0);
}
@Override
public Predicate notEqual(E value) {
return toEntityPredicate(e -> e != null && e.compareTo(value) != 0);
}
@Override
public Predicate lessThan(E value) {
return toEntityPredicate(e -> e != null && e.compareTo(value) < 0);
}
@Override
public Predicate lessOrEqual(E value) {
return toEntityPredicate(e -> e != null && e.compareTo(value) <= 0);
}
@Override
public Predicate greaterThan(E value) {
return toEntityPredicate(e -> e != null && e.compareTo(value) > 0);
}
@Override
public Predicate greaterOrEqual(E value) {
return toEntityPredicate(e -> e != null && e.compareTo(value) >= 0);
}
@Override
public Predicate between(E start, E end, Inclusion inclusion) {
return toEntityPredicate(e -> {
switch (inclusion) {
case START_EXCLUSIVE_END_EXCLUSIVE:
return e.compareTo(start) > 0 && e.compareTo(end) < 0;
case START_EXCLUSIVE_END_INCLUSIVE:
return e.compareTo(start) > 0 && e.compareTo(end) <= 0;
case START_INCLUSIVE_END_EXCLUSIVE:
return e.compareTo(start) >= 0 && e.compareTo(end) < 0;
case START_INCLUSIVE_END_INCLUSIVE:
return e.compareTo(start) >= 0 && e.compareTo(end) <= 0;
default : throw new UnsupportedOperationException(
"Unknown inclusion '" + inclusion + "'."
);
}
});
}
@Override
public Predicate notBetween(E start, E end, Inclusion inclusion) {
return toEntityPredicate(e -> {
switch (inclusion) {
case START_EXCLUSIVE_END_EXCLUSIVE:
return e.compareTo(start) <= 0 || e.compareTo(end) >= 0;
case START_EXCLUSIVE_END_INCLUSIVE:
return e.compareTo(start) <= 0 || e.compareTo(end) > 0;
case START_INCLUSIVE_END_EXCLUSIVE:
return e.compareTo(start) < 0 || e.compareTo(end) >= 0;
case START_INCLUSIVE_END_INCLUSIVE:
return e.compareTo(start) < 0 || e.compareTo(end) > 0;
default : throw new UnsupportedOperationException(
"Unknown inclusion '" + inclusion + "'."
);
}
});
}
@Override
public Predicate in(Collection values) {
return toEntityPredicate(values::contains);
}
@Override
public Predicate notIn(Collection values) {
return toEntityPredicate(e -> !values.contains(e));
}
////////////////////////////////////////////////////////////////////////////
// String Predicates //
////////////////////////////////////////////////////////////////////////////
@Override
public Predicate equal(String value) {
return toEntityPredicate(e -> value.equals(enumToString.apply(e)));
}
@Override
public Predicate notEqual(String value) {
return toEntityPredicate(e -> !value.equals(enumToString.apply(e)));
}
@Override
public Predicate lessThan(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.compareTo(value) < 0;
});
}
@Override
public Predicate lessOrEqual(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.compareTo(value) <= 0;
});
}
@Override
public Predicate greaterThan(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.compareTo(value) > 0;
});
}
@Override
public Predicate greaterOrEqual(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.compareTo(value) >= 0;
});
}
@Override
public Predicate between(String start, String end, Inclusion inclusion) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
if (str == null) return false;
switch (inclusion) {
case START_EXCLUSIVE_END_EXCLUSIVE:
return str.compareTo(start) > 0 && str.compareTo(end) < 0;
case START_EXCLUSIVE_END_INCLUSIVE:
return str.compareTo(start) > 0 && str.compareTo(end) <= 0;
case START_INCLUSIVE_END_EXCLUSIVE:
return str.compareTo(start) >= 0 && str.compareTo(end) < 0;
case START_INCLUSIVE_END_INCLUSIVE:
return str.compareTo(start) >= 0 && str.compareTo(end) <= 0;
default : throw new UnsupportedOperationException(
"Unknown inclusion '" + inclusion + "'."
);
}
});
}
@Override
public Predicate notBetween(String start, String end, Inclusion inclusion) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
if (str == null) return false;
switch (inclusion) {
case START_EXCLUSIVE_END_EXCLUSIVE:
return str.compareTo(start) <= 0 || str.compareTo(end) >= 0;
case START_EXCLUSIVE_END_INCLUSIVE:
return str.compareTo(start) <= 0 || str.compareTo(end) > 0;
case START_INCLUSIVE_END_EXCLUSIVE:
return str.compareTo(start) < 0 || str.compareTo(end) >= 0;
case START_INCLUSIVE_END_INCLUSIVE:
return str.compareTo(start) < 0 || str.compareTo(end) > 0;
default : throw new UnsupportedOperationException(
"Unknown inclusion '" + inclusion + "'."
);
}
});
}
@Override
public Predicate isEmpty() {
return toEntityPredicate(e -> "".equals(enumToString.apply(e)));
}
@Override
public Predicate equalIgnoreCase(String value) {
return toEntityPredicate(e -> value.equalsIgnoreCase(enumToString.apply(e)));
}
@Override
public Predicate startsWith(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.startsWith(value);
});
}
@Override
public Predicate startsWithIgnoreCase(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.toLowerCase()
.startsWith(value.toLowerCase());
});
}
@Override
public Predicate endsWith(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.endsWith(value);
});
}
@Override
public Predicate endsWithIgnoreCase(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.toLowerCase()
.endsWith(value.toLowerCase());
});
}
@Override
public Predicate contains(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.contains(value);
});
}
@Override
public Predicate containsIgnoreCase(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && str.toLowerCase()
.contains(value.toLowerCase());
});
}
@Override
public Predicate isNotEmpty() {
return toEntityPredicate(e -> !"".equals(enumToString.apply(e)));
}
@Override
public Predicate notEqualIgnoreCase(String value) {
return toEntityPredicate(e -> !value.equalsIgnoreCase(enumToString.apply(e)));
}
@Override
public Predicate notStartsWith(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && !str.startsWith(value);
});
}
@Override
public Predicate notEndsWith(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && !str.endsWith(value);
});
}
@Override
public Predicate notContains(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && !str.contains(value);
});
}
@Override
public Predicate notStartsWithIgnoreCase(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && !str.toLowerCase()
.startsWith(value.toLowerCase());
});
}
@Override
public Predicate notEndsWithIgnoreCase(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && !str.toLowerCase()
.endsWith(value.toLowerCase());
});
}
@Override
public Predicate notContainsIgnoreCase(String value) {
return toEntityPredicate(e -> {
final String str = enumToString.apply(e);
return str != null && !str.toLowerCase()
.contains(value.toLowerCase());
});
}
////////////////////////////////////////////////////////////////////////////
// Internal Methods //
////////////////////////////////////////////////////////////////////////////
private Predicate toEntityPredicate(Predicate predicate) {
final EnumSet valid = evaluate(predicate);
switch (valid.size()) {
case 0 : return new AlwaysFalsePredicate<>(this);
case 1 : return new ReferenceEqualPredicate<>(this, valid.iterator().next());
default : return new ReferenceInPredicate<>(this, valid);
}
}
private EnumSet evaluate(Predicate predicate) {
final EnumSet result = EnumSet.noneOf(enumClass);
constants.stream().filter(predicate).forEach(result::add);
return result;
}
}
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