com.jaspersoft.jasperserver.api.metadata.common.service.impl.VirtualDataSourceValidator.java Source code

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Here is the source code for com.jaspersoft.jasperserver.api.metadata.common.service.impl.VirtualDataSourceValidator.java

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/*
 * Copyright (C) 2005 - 2014 TIBCO Software Inc. All rights reserved.
 * http://www.jaspersoft.com.
 *
 * Unless you have purchased  a commercial license agreement from Jaspersoft,
 * the following license terms  apply:
 *
 * This program 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, see <http://www.gnu.org/licenses/>.
 */
package com.jaspersoft.jasperserver.api.metadata.common.service.impl;

import com.jaspersoft.jasperserver.api.common.domain.ValidationErrorFilter;
import com.jaspersoft.jasperserver.api.common.domain.ValidationErrors;
import com.jaspersoft.jasperserver.api.common.domain.impl.NullValidationErrorFilter;
import com.jaspersoft.jasperserver.api.common.domain.impl.ValidationErrorImpl;
import com.jaspersoft.jasperserver.api.metadata.common.domain.Resource;
import com.jaspersoft.jasperserver.api.metadata.common.domain.ResourceReference;
import com.jaspersoft.jasperserver.api.metadata.jasperreports.domain.VirtualReportDataSource;
import org.apache.commons.lang.StringUtils;

import java.util.Collection;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import java.util.regex.Pattern;

/**
 * @author Paul Lysak
 * @version $Id: $
 */
public class VirtualDataSourceValidator extends DefaultResourceValidator {
    private Pattern subDsIdInvalidChars = Pattern.compile("\\W");

    public boolean validateSubDsId(String value, String nameField, ValidationErrors errors) {
        if (!validateNameString(value, nameField, errors)) {
            return false;
        }

        if (subDsIdInvalidChars.matcher(value).find()) {
            errors.add(new ValidationErrorImpl(getErrorMessagePrefix() + "error.invalid.chars", null,
                    "Only letters, digits and underscore allowed in subDsId", nameField));
        }
        if (!StringUtils.isEmpty(value)) {
            char firstChar = value.charAt(0);
            if (firstChar == '_' || Character.isDigit(firstChar)) {
                errors.add(new ValidationErrorImpl(getErrorMessagePrefix() + "error.first.letter.required", null,
                        "Should start with letter", nameField));
            }
        }
        return true;
    }

    @Override
    public ValidationErrors validate(Resource resource, ValidationErrorFilter filter) {
        String subDsMapFieldName = getFieldPrefix() + "subDsMap";
        if (filter == null) {
            filter = NullValidationErrorFilter.getInstance();
        }

        ValidationErrors errors = super.validate(resource, filter);
        VirtualReportDataSource vds = (VirtualReportDataSource) resource;

        if (filter.matchErrorField(subDsMapFieldName)
                && (vds.getDataSourceUriMap() == null || vds.getDataSourceUriMap().size() < 2)) {
            errors.add(new ValidationErrorImpl(getErrorMessagePrefix() + "minimal_subds_count", null,
                    "At least 2 sub-datasources required", "dataSourceUriMap"));
            return errors;
        }

        Set<String> visitedUris = new HashSet<String>();
        String subDsIdFieldName = getFieldPrefix() + "subDsId";
        for (Map.Entry<String, ResourceReference> entry : vds.getDataSourceUriMap().entrySet()) {
            //validate subDsId
            if (filter.matchErrorField(subDsIdFieldName)) {
                validateSubDsId(entry.getKey(), subDsIdFieldName, errors);
            }

            String uri = entry.getValue().getReferenceURI();
            if (filter.matchErrorField(subDsMapFieldName) && visitedUris.contains(uri)) {
                errors.add(new ValidationErrorImpl(getErrorMessagePrefix() + "duplicate_subds_uri",
                        new Object[] { uri }, "Same resource referenced twice: {0}"));
            } else {
                visitedUris.add(uri);
            }
        }
        return errors;
    }
}