org.grails.databinding.converters.AbstractStructuredDateBindingEditor.groovy Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of grace-databinding Show documentation
Grace Framework : Grace Databinding
The newest version!
/*
 * Copyright 2013-2023 the original author or authors.
 *
 * 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
 *
 *      https://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.grails.databinding.converters

import groovy.transform.CompileStatic

import grails.databinding.DataBindingSource
import grails.databinding.StructuredBindingEditor

/**
 * @author Jeff Brown
 * @since 2.3
 */
@CompileStatic
abstract class AbstractStructuredDateBindingEditor implements StructuredBindingEditor {

    T assemble(String propertyName, DataBindingSource fieldValues) throws IllegalArgumentException {
        String prefix = propertyName + '_'
        assert fieldValues.containsProperty(prefix + 'year'), "Can't populate a date without a year"

        String yearString = (String) fieldValues.getPropertyValue(prefix + 'year')
        String monthString = (String) fieldValues.getPropertyValue(prefix + 'month')
        String dayString = (String) fieldValues.getPropertyValue(prefix + 'day')
        String hourString = (String) fieldValues.getPropertyValue(prefix + 'hour')
        String minuteString = (String) fieldValues.getPropertyValue(prefix + 'minute')
        if (!yearString &&
                !monthString &&
                !dayString &&
                !hourString &&
                !minuteString) {
            return null
        }
        int year
        try {
            assert yearString, "Can't populate a date without a year"

            year = Integer.parseInt(yearString)

            int month = getIntegerValue(fieldValues, prefix + 'month', 1)
            int day = getIntegerValue(fieldValues, prefix + 'day', 1)
            int hour = getIntegerValue(fieldValues, prefix + 'hour', 0)
            int minute = getIntegerValue(fieldValues, prefix + 'minute', 0)

            GregorianCalendar c = new GregorianCalendar(year, month - 1, day, hour, minute)
            return getDate(c)
        }
        catch (NumberFormatException ignored) {
            throw new IllegalArgumentException("Unable to parse structured date from request for date [${propertyName}]")
        }
    }

    List getRequiredFields() {
        ['year']
    }

    List getOptionalFields() {
        ['month', 'day', 'hour', 'minute']
    }

    T getPropertyValue(obj, String propertyName, DataBindingSource source) {
        assemble(propertyName, source)
    }

    private int getIntegerValue(DataBindingSource values, String name, int defaultValue) throws NumberFormatException {
        if (values.getPropertyValue(name) != null) {
            return Integer.parseInt((String) values.getPropertyValue(name))
        }
        defaultValue
    }

    abstract T getDate(Calendar c)

}