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Add equation explaining text to the comments and fix fomratting issues

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Added missing comments, formatted code lines, formatted license
and added more comments.
feature/appm-store/pbac
Yohan Avishke 5 years ago
parent e8a260dbc4
commit 2fab3029ff
8 changed files with 41 additions and 20 deletions
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3
components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/exceptions/BadRequestException.java
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@ -1,5 +1,4 @@
/*
*
* Copyright (c) 2020, Entgra (pvt) Ltd. (http://entgra.io) All Rights Reserved.
*
* Entgra (pvt) Ltd. licenses this file to you under the Apache License,
@ -42,5 +41,5 @@ public class BadRequestException extends Exception {
public BadRequestException(String message, Throwable cause) {
super(message, cause);
}
}

1
components/device-mgt/org.wso2.carbon.device.mgt.common/src/main/java/org/wso2/carbon/device/mgt/common/report/mgt/ReportManagementService.java
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@ -57,6 +57,7 @@ public interface ReportManagementService {
* @param request {@link PaginationRequest}
* @return {@link PaginationResult}
* @throws ReportManagementException Might occur during the business logic or building database query
* @throws BadRequestException Might occur if the given os version or the device type doesn't match
*/
PaginationResult getDevicesExpiredByOSVersion(PaginationRequest request)
throws ReportManagementException, BadRequestException;

9
components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/device/GenericDeviceDAOImpl.java
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@ -867,6 +867,8 @@ public class GenericDeviceDAOImpl extends AbstractDeviceDAOImpl {
try {
Long osValue = (Long) request.getProperty(Constants.OS_VALUE);
Connection conn = getConnection();
/* following variable is used to identify the datasource type.This is due to a
convert function performed in the query which will depend on the datasource */
String dataSourceType = conn.getMetaData().getDatabaseProductName();
String sql="SELECT " +
"d1.DEVICE_TYPE, " +
@ -938,6 +940,8 @@ public class GenericDeviceDAOImpl extends AbstractDeviceDAOImpl {
throws DeviceManagementDAOException {
try {
Connection conn = getConnection();
/* following variable is used to identify the datasource type.This is due to a
convert function performed in the query which will depend on the datasource */
String dataSourceType = conn.getMetaData().getDatabaseProductName();
String sql = "SELECT " +
"COUNT(ddi.DEVICE_ID) AS DEVICE_COUNT " +
@ -964,11 +968,10 @@ public class GenericDeviceDAOImpl extends AbstractDeviceDAOImpl {
ps.setLong(4, osValue);
try (ResultSet rs = ps.executeQuery()) {
int deviceCount = 0;
if (rs.next()) {
deviceCount = rs.getInt("DEVICE_COUNT");
return rs.getInt("DEVICE_COUNT");
}
return deviceCount;
return 0;
}
}
} catch (SQLException e) {

5
components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/device/OracleDeviceDAOImpl.java
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@ -925,11 +925,10 @@ public class OracleDeviceDAOImpl extends AbstractDeviceDAOImpl {
ps.setLong(4, osValue);
try (ResultSet rs = ps.executeQuery()) {
int deviceCount = 0;
if (rs.next()) {
deviceCount = rs.getInt("DEVICE_COUNT");
return rs.getInt("DEVICE_COUNT");
}
return deviceCount;
return 0;
}
}
} catch (SQLException e) {

5
components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/device/PostgreSQLDeviceDAOImpl.java
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@ -909,11 +909,10 @@ public class PostgreSQLDeviceDAOImpl extends AbstractDeviceDAOImpl {
ps.setLong(4, osValue);
try (ResultSet rs = ps.executeQuery()) {
int deviceCount = 0;
if (rs.next()) {
deviceCount = rs.getInt("DEVICE_COUNT");
return rs.getInt("DEVICE_COUNT");
}
return deviceCount;
return 0;
}
}
} catch (SQLException e) {

5
components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dao/impl/device/SQLServerDeviceDAOImpl.java
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@ -725,11 +725,10 @@ public class SQLServerDeviceDAOImpl extends AbstractDeviceDAOImpl {
ps.setLong(4, osValue);
try (ResultSet rs = ps.executeQuery()) {
int deviceCount = 0;
if (rs.next()) {
deviceCount = rs.getInt("DEVICE_COUNT");
return rs.getInt("DEVICE_COUNT");
}
return deviceCount;
return 0;
}
}
} catch (SQLException e) {

4
components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/report/mgt/Constants.java
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@ -1,5 +1,4 @@
/*
*
* Copyright (c) 2020, Entgra (pvt) Ltd. (http://entgra.io) All Rights Reserved.
*
* Entgra (pvt) Ltd. licenses this file to you under the Apache License,
@ -15,10 +14,8 @@
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*/
package org.wso2.carbon.device.mgt.core.report.mgt;
public class Constants {
@ -33,3 +30,4 @@ public class Constants {
public static final int NUM_OF_OS_VERSION_DIGITS= 5;
public static final int NUM_OF_OS_VERSION_POSITIONS = 3;
}

29
components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/util/DeviceManagerUtil.java
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@ -731,7 +731,18 @@ public final class DeviceManagerUtil {
int osVersionsLength = osVersions.length;
/*
* <h1>Following loop will work for the value generation</h1>
* <h1>Equation explanation</h1>
*
* <p>
Eg: {@code osVersion == "5.1.1"} will generate an array of {@code ["5","1","1"]}
Following loop for the above result can be broken down as below
* Iteration 1 : {@code Math.pow} result = 5 00000 00000, {@code sum} = 5 00000 00000
* Iteration 2 : {@code Math.pow} result = 1 00000, {@code sum} = 5 00001 00000
* Iteration 3 : {@code Math.pow} result = 1, {@code sum} = 5 00001 00001
To generate the above results I have multiplied the array values with powers of 10.
The constraints used to generate the power of 10 is explained below,
* </p>
*
* <p>
{@code Constants.NUM_OF_OS_VERSION_POSITIONS - (i + 1)} was done in-order to identify
which position of the OS version is been used for generation process, so correct number
@ -742,7 +753,7 @@ public final class DeviceManagerUtil {
{@code Constants.NUM_OF_OS_VERSION_DIGITS} this multiplication will make sure that the
values generated will reduce in following order main OS version, minor OS version, Revision.
* </p>
*/
*/
return IntStream
.range(0, osVersionsLength)
.mapToLong(i -> (long) (Math.pow(10, (Constants.NUM_OF_OS_VERSION_POSITIONS - (i + 1))
@ -762,7 +773,19 @@ public final class DeviceManagerUtil {
StringJoiner joiner = new StringJoiner(".");
/*
* <h1>Following loop will break the generated value into parts and will recreate the OS version</h1>
* <h1>Equation explanation</h1>
*
* <p>
Eg: {@code osVersionValue == "5 00001 00001"}
Following loop will divide to break down the above number to regenerate the os version
* Iteration 1 : {@code osVersion} = 5 , {@code osVersionValue} = 00001 00001
* Iteration 2 : {@code osVersion} = 1 , {@code osVersionValue} = 00001
* Iteration 3 : {@code osVersion} = 1 , {@code osVersionValue} = 0
Final array = {@code ["5","1","1"]}
To generate the above results I have divided the generated value with powers of 10.
The constraints used to generate the power of 10 is explained below,
* </p>
*
* <p>
{@code 10, (i - 1) * Constants.NUM_OF_OS_VERSION_DIGITS} this will break the generated value
creating each OS version position in following order main OS version, minor OS version,

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