LongType.java

/**
 * ***************************************************************************
 * Copyright (c) 2010 Qcadoo Limited
 * Project: Qcadoo Framework
 * Version: 1.4
 *
 * This file is part of Qcadoo.
 *
 * Qcadoo is free software; you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as published
 * by the Free Software Foundation; either version 3 of the License,
 * or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 * See the GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 * ***************************************************************************
 */
package com.qcadoo.model.internal.types;

import com.google.common.collect.Lists;
import com.qcadoo.model.api.FieldDefinition;
import com.qcadoo.model.api.NumberService;
import com.qcadoo.model.internal.api.DefaultValidatorsProvider;
import com.qcadoo.model.internal.api.FieldHookDefinition;
import com.qcadoo.model.internal.api.ValueAndError;
import com.qcadoo.model.internal.validators.UnscaledValueValidator;

import java.text.NumberFormat;
import java.text.ParsePosition;
import java.util.Collection;
import java.util.Collections;
import java.util.Locale;

public final class LongType extends AbstractFieldType implements DefaultValidatorsProvider {

    public LongType() {
        this(true);
    }

    public LongType(final boolean copyable) {
        super(copyable);
    }

    @Override
    public Class<?> getType() {
        return Long.class;
    }

    @Override
    public ValueAndError toObject(final FieldDefinition fieldDefinition, final Object value) {
        if (value instanceof Long) {
            return ValueAndError.withoutError(value);
        }
        try {
            return ValueAndError.withoutError(Long.parseLong(String.valueOf(value)));
        } catch (NumberFormatException e) {
            return ValueAndError.withError("qcadooView.validate.field.error.invalidNumericFormat");
        }
    }

    @Override
    public String toString(final Object value, final Locale locale) {
        Object v = value;
        if(value instanceof Long){
            v = ((Long)value).intValue();
        }
        return NumberFormat.getIntegerInstance(locale).format(v);
    }

    @Override
    public Object fromString(final String value, final Locale locale) {
        ParsePosition parsePosition = new ParsePosition(0);
        String trimedValue = value.replace(" ", "");
        Object parsedValue = NumberFormat.getIntegerInstance(locale).parse(trimedValue, parsePosition);
        if (parsePosition.getIndex() == trimedValue.length()) {
            if(parsedValue instanceof Integer){
                parsedValue = ((Integer)parsedValue).longValue();
            }
            return parsedValue;
        }
        return value;
    }

    @Override
    public Collection<FieldHookDefinition> getMissingValidators(final Iterable<FieldHookDefinition> validators) {
        for (FieldHookDefinition validator : validators) {
            if (validator instanceof UnscaledValueValidator) {
                if (((UnscaledValueValidator) validator).hasUppuerBoundDefined()) {
                    return Collections.emptyList();
                }
            }
        }
        return Lists.<FieldHookDefinition> newArrayList(new UnscaledValueValidator(null, null,
                NumberService.DEFAULT_MAX_DIGITS_IN_INTEGER));
    }

}