org.goko.common.bindings.validator.StringRealNumberValidator.java Source code

Introduction

Here is the source code for org.goko.common.bindings.validator.StringRealNumberValidator.java

Source

/*******************************************************************************
 *    This file is part of Goko.
 *
 *   Goko is free software: you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation, either version 3 of the License, or
 *   (at your option) any later version.
 *
 *   Goko 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with Goko.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package org.goko.common.bindings.validator;

import java.math.BigDecimal;

import org.apache.commons.lang3.StringUtils;
import org.eclipse.core.databinding.validation.IValidator;
import org.eclipse.core.databinding.validation.ValidationStatus;
import org.eclipse.core.runtime.IStatus;

public class StringRealNumberValidator implements IValidator {

    public StringRealNumberValidator() {

    }

    @Override
    public IStatus validate(Object value) {
        if (value instanceof BigDecimal || value instanceof Integer || value instanceof Double
                || value instanceof Float) {
            return ValidationStatus.ok();
        }
        if (value != null && value instanceof String && StringUtils
                .defaultIfBlank(value.toString(), StringUtils.EMPTY).matches("-?[0-9]+(\\.[0-9]*)?")) {
            return ValidationStatus.ok();
        }
        return ValidationStatus
                .error("Invalid number : value '" + String.valueOf(value) + "' is not a valid number.");
    }

}