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org.joda.time.field.ZeroIsMaxDateTimeField Maven / Gradle / Ivy

/*
 *  Copyright 2001-2013 Stephen Colebourne
 *
 *  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 org.joda.time.field;

import org.joda.time.DateTimeField;
import org.joda.time.DateTimeFieldType;
import org.joda.time.DurationField;
import org.joda.time.ReadablePartial;

/**
 * Wraps another field such that zero values are replaced with one more than
 * it's maximum. This is particularly useful for implementing an clockhourOfDay
 * field, where the midnight value of 0 is replaced with 24.
 * 

* ZeroIsMaxDateTimeField is thread-safe and immutable. * * @author Brian S O'Neill * @since 1.0 */ public final class ZeroIsMaxDateTimeField extends DecoratedDateTimeField { @SuppressWarnings("unused") private static final long serialVersionUID = 961749798233026866L; /** * Constructor. * * @param field the base field * @param type the field type this field will actually use * @throws IllegalArgumentException if wrapped field's minimum value is not zero */ public ZeroIsMaxDateTimeField(DateTimeField field, DateTimeFieldType type) { super(field, type); if (field.getMinimumValue() != 0) { throw new IllegalArgumentException("Wrapped field's minumum value must be zero"); } } public int get(long instant) { int value = getWrappedField().get(instant); if (value == 0) { value = getMaximumValue(); } return value; } public long add(long instant, int value) { return getWrappedField().add(instant, value); } public long add(long instant, long value) { return getWrappedField().add(instant, value); } public long addWrapField(long instant, int value) { return getWrappedField().addWrapField(instant, value); } public int[] addWrapField(ReadablePartial instant, int fieldIndex, int[] values, int valueToAdd) { return getWrappedField().addWrapField(instant, fieldIndex, values, valueToAdd); } public int getDifference(long minuendInstant, long subtrahendInstant) { return getWrappedField().getDifference(minuendInstant, subtrahendInstant); } public long getDifferenceAsLong(long minuendInstant, long subtrahendInstant) { return getWrappedField().getDifferenceAsLong(minuendInstant, subtrahendInstant); } public long set(long instant, int value) { int max = getMaximumValue(); FieldUtils.verifyValueBounds(this, value, 1, max); if (value == max) { value = 0; } return getWrappedField().set(instant, value); } public boolean isLeap(long instant) { return getWrappedField().isLeap(instant); } public int getLeapAmount(long instant) { return getWrappedField().getLeapAmount(instant); } public DurationField getLeapDurationField() { return getWrappedField().getLeapDurationField(); } /** * Always returns 1. * * @return the minimum value of 1 */ public int getMinimumValue() { return 1; } /** * Always returns 1. * * @return the minimum value of 1 */ public int getMinimumValue(long instant) { return 1; } /** * Always returns 1. * * @return the minimum value of 1 */ public int getMinimumValue(ReadablePartial instant) { return 1; } /** * Always returns 1. * * @return the minimum value of 1 */ public int getMinimumValue(ReadablePartial instant, int[] values) { return 1; } /** * Get the maximum value for the field, which is one more than the wrapped * field's maximum value. * * @return the maximum value */ public int getMaximumValue() { return getWrappedField().getMaximumValue() + 1; } /** * Get the maximum value for the field, which is one more than the wrapped * field's maximum value. * * @return the maximum value */ public int getMaximumValue(long instant) { return getWrappedField().getMaximumValue(instant) + 1; } /** * Get the maximum value for the field, which is one more than the wrapped * field's maximum value. * * @return the maximum value */ public int getMaximumValue(ReadablePartial instant) { return getWrappedField().getMaximumValue(instant) + 1; } /** * Get the maximum value for the field, which is one more than the wrapped * field's maximum value. * * @return the maximum value */ public int getMaximumValue(ReadablePartial instant, int[] values) { return getWrappedField().getMaximumValue(instant, values) + 1; } public long roundFloor(long instant) { return getWrappedField().roundFloor(instant); } public long roundCeiling(long instant) { return getWrappedField().roundCeiling(instant); } public long roundHalfFloor(long instant) { return getWrappedField().roundHalfFloor(instant); } public long roundHalfCeiling(long instant) { return getWrappedField().roundHalfCeiling(instant); } public long roundHalfEven(long instant) { return getWrappedField().roundHalfEven(instant); } public long remainder(long instant) { return getWrappedField().remainder(instant); } }





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