hydrograph.ui.validators.impl.AdditionalParamDBValidationRule.java Source code

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/*******************************************************************************
 * Copyright 2017 Capital One Services, LLC and Bitwise, Inc.
 * 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 hydrograph.ui.validators.impl;

import java.math.BigInteger;
import java.util.List;
import java.util.Map;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.apache.commons.lang.StringUtils;

import hydrograph.ui.common.util.Constants;
import hydrograph.ui.common.util.ParameterUtil;
import hydrograph.ui.datastructure.property.FixedWidthGridRow;

/**
 * AdditionalParamDBValidationRule validates the additional parameter fields present for Database Components
 * @author Bitwise
 *
 */
public class AdditionalParamDBValidationRule implements IValidator {
    private String errorMessage;

    @Override
    public boolean validateMap(Object object, String propertyName,
            Map<String, List<FixedWidthGridRow>> inputSchemaMap) {
        Map<String, Object> propertyMap = (Map<String, Object>) object;
        if (propertyMap != null && !propertyMap.isEmpty()) {
            return validate(propertyMap.get(propertyName), propertyName, inputSchemaMap, false);
        }
        return false;
    }

    @Override
    public boolean validate(Object object, String propertyName, Map<String, List<FixedWidthGridRow>> inputSchemaMap,
            boolean isJobFileImported) {

        Map<String, String> additionalParam = null;
        if (object != null && Map.class.isAssignableFrom(object.getClass())) {
            additionalParam = (Map<String, String>) object;
            if (!additionalParam.isEmpty()) {
                return validatePropertyMap(additionalParam, propertyName);
            }
        }
        errorMessage = propertyName + " can not be blank";

        return true;
    }

    @Override
    public String getErrorMessage() {
        return errorMessage;
    }

    private boolean validatePropertyMap(Map<String, String> additionalParam, String propertyName) {
        if (!additionalParam.containsKey(Constants.ADDITIONAL_DB_CHUNK_SIZE)
                && (additionalParam.containsKey(Constants.NUMBER_OF_PARTITIONS)
                        || additionalParam.containsKey(Constants.ADDITIONAL_DB_FETCH_SIZE)
                        || additionalParam.containsKey(Constants.ADDITIONAL_PARAMETERS_FOR_DB))) {//input

            if (StringUtils.isNotBlank(additionalParam.get(Constants.NUMBER_OF_PARTITIONS))) {
                if ((validatePopertyFields(additionalParam, propertyName, propertyName))
                        && (additionalParam.containsKey(Constants.ADDITIONAL_DB_FETCH_SIZE)
                                && validateFetchSizeField(additionalParam, propertyName, propertyName))
                        && validateAdditionalParam(additionalParam, propertyName, propertyName)) {
                    return true;
                }
            } else if ((additionalParam.containsKey(Constants.ADDITIONAL_DB_FETCH_SIZE)
                    && validateFetchSizeField(additionalParam, propertyName, propertyName))
                    && validateAdditionalParam(additionalParam, propertyName, propertyName)) {
                return true;
            }

        } else if (additionalParam.containsKey(Constants.ADDITIONAL_DB_CHUNK_SIZE)
                || additionalParam.containsKey(Constants.ADDITIONAL_PARAMETERS_FOR_DB)) {//output
            if (validateChunkSize(additionalParam, propertyName, propertyName)
                    && validateAdditionalParam(additionalParam, propertyName, propertyName)) {
                return true;
            }
        }
        return false;
    }

    private boolean validatePopertyFields(Map<String, String> additionalParam, String errorMessage,
            String propertyName) {
        if (validateNumeric(additionalParam, Constants.NUMBER_OF_PARTITIONS, propertyName)
                && validateNumeric(additionalParam, Constants.NOP_UPPER_BOUND, propertyName)
                && validateNumeric(additionalParam, Constants.NOP_LOWER_BOUND, propertyName)
                && StringUtils.isNotBlank(additionalParam.get(Constants.DB_PARTITION_KEY))
                && compareBigIntegerValue(additionalParam.get(Constants.NOP_UPPER_BOUND),
                        additionalParam.get(Constants.NOP_LOWER_BOUND))) {
            return true;
        } else {
            errorMessage = propertyName + " is mandatory";
            return false;
        }
    }

    private boolean validateNumeric(Map<String, String> additionalParam, String key, String propertyName) {
        if (StringUtils.isNotBlank(additionalParam.get(key))) {
            Matcher matchs = Pattern.compile(Constants.NUMERIC_REGEX).matcher(additionalParam.get(key));
            return validateNumericField(additionalParam.get(key), propertyName, errorMessage, matchs);
        }
        return false;
    }

    private boolean validateNumericField(String value, String propertyName, String errorMessage, Matcher matchs) {
        boolean isValid = false;
        if (matchs.matches() || ParameterUtil.isParameter(value)) {
            isValid = true;
        } else {
            isValid = false;
            errorMessage = propertyName + " is mandatory";
        }
        return isValid;
    }

    private boolean validateFetchSizeField(Map<String, String> additionalParam, String errorMessage,
            String propertyName) {
        return validateNumeric(additionalParam, Constants.ADDITIONAL_DB_FETCH_SIZE, propertyName);
    }

    private boolean validateChunkSize(Map<String, String> additionalParam, String errorMessage,
            String propertyName) {
        return validateNumeric(additionalParam, Constants.ADDITIONAL_DB_CHUNK_SIZE, propertyName);
    }

    private boolean validateAdditionalParam(Map<String, String> additionalParam, String errorMessage,
            String propertyName) {
        boolean isValid = false;
        for (String key : additionalParam.keySet()) {
            if (StringUtils.equalsIgnoreCase(key, Constants.ADDITIONAL_PARAMETERS_FOR_DB)
                    && StringUtils.isNotBlank(additionalParam.get(Constants.ADDITIONAL_PARAMETERS_FOR_DB))) {
                Matcher matchs = Pattern.compile(Constants.DB_REGEX).matcher(additionalParam.get(key));
                isValid = validateNumericField(additionalParam.get(key), propertyName, errorMessage, matchs);
                if (!isValid) {
                    break;
                }
            } else {
                isValid = true;
            }

        }
        return isValid;
    }

    /**
     * The Function will compare bigInteger values
     * @param value1
     * @param value2
     * @return
     */
    private boolean compareBigIntegerValue(String value1, String value2) {
        if (StringUtils.isNotBlank(value1) && StringUtils.isNotBlank(value2) && validateNumericField(value1)
                && validateNumericField(value2)) {
            BigInteger int1 = BigInteger.valueOf(Long.parseLong(value1));
            BigInteger int2 = BigInteger.valueOf(Long.parseLong(value2));
            if (int1.compareTo(int2) == -1) {
                return false;
            }

        }
        return true;
    }

    /**
     * The Function used to validate the field & field should be positive integer
     * @param text
     * @param text1Decorator
     * @return
     */
    private boolean validateNumericField(String text) {
        if (StringUtils.isNotBlank(text)) {
            Matcher matchs = Pattern.compile(Constants.NUMERIC_REGEX).matcher(text);
            if (matchs.matches()) {
                return true;
            }
        }
        return false;
    }
}