SQL Server custom CLR aggregate bitwise and - sql-server

I wrote a custom CLR bitwise-and aggregate function in C#. But it is not working.
It always returns value of the last row in aggregated records.
What's the mistake?
[Serializable]
[Microsoft.SqlServer.Server.SqlUserDefinedAggregate(
Format.Native,
IsInvariantToOrder = false,
IsInvariantToNulls = true,
IsInvariantToDuplicates = false
)]
public struct AggAnd
{
private long _value;
public bool IsNull { get; private set; }
public void Init()
{
_value = 0;
IsNull = false;
}
public void Accumulate(SqlInt64 value)
{
if (!value.IsNull)
{
_value = value.Value;
}
}
public void Merge(AggAnd x)
{
_value = x._value & _value;
}
public SqlInt64 Terminate()
{
return new SqlInt64(_value);
}
}
Here is sample SQL to test the function:
DECLARE #a TABLE (num int, ch char(1))
INSERT INTO #a(num, ch)
VALUES (3, 'a'), (1, 'a'), (1, 'b'), (2, 'b')
SELECT
ch,
dbo.AggAnd(num) AS [aggregated-and]
FROM
#a
GROUP BY
ch
The output is as follows:
ch
aggregated-and
a
1
b
2


I found the issue!
The Accumulate() method should be written this way:
...
public void Accumulate(SqlInt64 value)
{
if (!value.IsNull)
{
if (_value == 0)
_value = value.Value;
else
_value &= value.Value;
}
}
...

Related

Using an Enum in #BeanParam

I am using a #BeanParam like this:
#GET
public Response listAllPaged(#BeanParam PagedRequest pagedRequest) {
// Do stuff...
}
The bean itself:
public class PagedRequest {
#QueryParam("sortOrder")
#DefaultValue("0")
public int sortOrder;
}
Now I would like to change the type of sortOrder to the following enum:
public enum SortOrder {
ASC("asc"),
DESC("desc");
public final String sortOrder;
SortOrder(String sortOrder) {
this.sortOrder = sortOrder;
}
}
But as soon as I do this:
public class PagedRequest {
#QueryParam("sortOrder")
#DefaultValue("asc")
public SortOrder sortOrder;
}
My REST Endpoint cannot match the signature anymore and returns a 404. Why is that? I thought that the presence of a constructor accepting a single String should allow JAX-RS to do the conversion.
What am I doing wrong?
UPDATE
I managed to make it work like this, but it does not really answer my initial question...
public enum SortOrder {
ASC,
DESC;
public static SortOrder fromString(String param) {
String toUpper = param.toUpperCase();
try {
return valueOf(toUpper);
} catch (Exception e) {
return null;
}
}
}

The Enum.valueOf(String) method is used to resolve the value. Since your SorterOrder enums are uppercase you'd be required to send the parameter in uppercase.
If you want to pass the value in lowercase only you could change the enum names to lower case, e.g. SortOrder.asc.
If you don't know or don't want to care about the case the parameter is sent in you could use a ParamConverter.
public class SortOrderParamConverter implements ParamConverter<SortOrder> {
#Override
public SortOrder fromString(final String value) {
if (value != null) {
return SortOrder.valueOf(value.toUpperCase(Locale.ROOT));
}
return SortOrder.ASC;
}
#Override
public String toString(final SortOrder value) {
return value.name();
}
}
If you want a more generic approach you could create a ParamConverter or all enums.
#Provider
public class EnumParamConverterProvider implements ParamConverterProvider {
#Override
public <T> ParamConverter<T> getConverter(final Class<T> rawType, final Type genericType,
final Annotation[] annotations) {
if (!rawType.isEnum()) {
return null;
}
final Enum<?>[] constants = (Enum<?>[]) rawType.getEnumConstants();
return new ParamConverter<T>() {
#Override
#SuppressWarnings("unchecked")
public T fromString(final String value) {
if (value == null || value.isEmpty()) {
return null;
}
for (Enum<?> e : constants) {
if (e.name().equalsIgnoreCase(value)) {
return (T) e;
}
}
// No match, check toString()
for (Enum<?> e : constants) {
if (e.toString().equalsIgnoreCase(value)) {
return (T) e;
}
}
return null;
}
#Override
public String toString(final T value) {
return value != null ? value.toString() : null;
}
};
}
}

Hibernate Transformers.aliasToBean populate primary fields

I am trying to get list of Tbcompany table using Transformers.aliasToBean with 2 primary key fields.
I am using SQL SERVER and Hibernate 3.2.4.
My table has 2 primary fields.
Tbcompany.class
public class Tbcompany {
private TbcompanyId id;
private String hcompanycode;
public TbcompanyId getId() {
return id;
}
public void setId(TbcompanyId id) {
this.id = id;
}
public String getHcompanycode() {
return hcompanycode;
}
public void setHcompanycode(String hcompanycode) {
this.hcompanycode = hcompanycode;
}
}
And inside TbcompanyId.class :
public class TbcompanyId
implements Serializable
{
private String companycode;
private String companyname;
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (!(o instanceof TbcompanyId)) {
return false;
}
TbcompanyId other = ((TbcompanyId) o);
if (this.companycode == null) {
if (other.companycode!= null) {
return false;
}
} else {
if (!this.companycode.equals(other.companycode)) {
return false;
}
}
if (this.companyname == null) {
if (other.companyname!= null) {
return false;
}
} else {
if (!this.companyname.equals(other.companyname)) {
return false;
}
}
return true;
}
public int hashCode() {
int rtn = 17;
rtn = (rtn* 37);
if (this.companycode!= null) {
rtn = (rtn + this.companycode.hashCode());
}
rtn = (rtn* 37);
if (this.companyname!= null) {
rtn = (rtn + this.companyname.hashCode());
}
return rtn;
}
public String getCompanycode() {
return companycode;
}
public void setCompanycode(String companycode) {
this.companycode = companycode;
}
public String getCompanyname() {
return companyname;
}
public void setCompanyname(String companyname) {
this.companyname = companyname;
}
I want to create a form and use Transformers.aliasToBean to populate the form .
This query :
Query q;
q = session.createQuery("SELECT a.id.companycode as companycode,a.id.companyname as companyname,a.hcompanycode as hcompanycode FROM Tbcompany a");
q.setResultTransformer(Transformers.aliasToBean(Tbcompany.class));
list = q.list();
gives me an error of :
org.hibernate.PropertyNotFoundException: Could not find setter for companycode on class com.loansdb.data.Tbcompany
While this query :
Query q;
q = session.createQuery("SELECT a.id.companycode,a.id.companyname,a.hcompanycode as hcompanycode FROM
Tbcompany a");
q.setResultTransformer(Transformers.aliasToBean(Tbcompany.class));
list = q.list();
gives me this error :
org.hibernate.PropertyNotFoundException: Could not find setter for 0 on class com.loansdb.data.Tbcompany
Does anyone know how to do this?

The aliasToBean transformer use the name of the SQL columns returned and try to find a field with the same name on the class target that have a set method created.
So, your query returns a a.id.companycode:
SELECT a.id.companycode as companycode,a.id.companyname as companyname,a.hcompanycode as hcompanycode FROM Tbcompany a
The error said:
org.hibernate.PropertyNotFoundException: Could not find setter for companycode on class com.loansdb.data.Tbcompany
And your Tbcompany class does not have a setter to companycode.
So, to correct your Tbcompany class and looking your query, seems to me that the class it's something like:
public class Tbcompany {
private String companycode;
private String companycode;
private String companyname;
public String setCompanycode(String companycode) {
this.companycode = companycode;
}
// create the constructor, getters and setters
}

why checked checkbox higher than unchecked in visualforce table

I what to sort table by field Order Number:Check List
I have a WrapperClass which implements interface Comparable:
public class CheckListWrapper implements Comparable
{
public Boolean isChecked {get; set;}
public String shortDescription {get; set;}
public String fullDescription {get; set;}
public Integer order {get; set;}
public CheckList__c checkList;
public CheckListItem__c checkListItem;
public CheckListWrapper(CheckList__c chList)
{
shortDescription = chList.Short_Description__c;
fullDescription = chList.Full_Description__c;
order = (Integer)chList.Order__c;
isChecked = false;
checkList = chList;
}
public CheckListWrapper(CheckListItem__c chListItem)
{
shortDescription = chListItem.CheckList__r.Short_Description__c;
fullDescription = chListItem.CheckList__r.Full_Description__c;
order = (Integer)chListItem.CheckList__r.Order__c;
isChecked = true;
checkListItem = chListItem;
}
public Integer compareTo(Object compareTo)
{
CheckListWrapper compareToCheckList = (CheckListWrapper)compareTo;
Integer returnValue = 0;
if (checkList != null)
{
if (checkList.Order__c > compareToCheckList.checkList.Order__c)
{
returnValue = 1;
} else if (checkList.Order__c < compareToCheckList.checkList.Order__c)
{
returnValue = -1;
}
} else if (checkListItem != null)
{
if (checkListItem.CheckList__r.Order__c > compareToCheckList.checkListItem.CheckList__r.Order__c)
{
returnValue = 1;
} else if (checkListItem.CheckList__r.Order__c < compareToCheckList.checkListItem.CheckList__r.Order__c)
{
returnValue = -1;
}
}
return returnValue;
}
}
Interface comparable works but all checked checkboxes are higher than unchecked.
The question is why checked checkboxes are higher than unchecked and how could be avoided it?

Well. I understood my mistake: Everything is alright, but I had should used one block if else in the method compareTo and don't reference to field Order__c through the Object CheckList__c. I had should used "order" variable from CheckListWrapper:
public Integer compareTo(Object compareTo)
{
CheckListWrapper compareToCheckList = (CheckListWrapper)compareTo;
Integer returnValue = 0;
if (order > compareToCheckList.order)
{
returnValue = 1;
} else if (order < compareToCheckList.order)
{
returnValue = -1;
}
return returnValue;
}

Dapper table valued parameter as a property?

I have a stored proc like this:
CREATE PROCEDURE [dbo].[Organisation_Insert]
#OrganisationXId uniqueidentifier
,#Enabled bit
,#Timezone nvarchar(50)
,#MinimumValue float
,#Rules ReminderRuleType READONLY ...
ReminderRuleType is a user defined type.
In my app I have this:
class OrganisationDTO
{
private readonly IOrganisationDocument _orgDoc;
public long OrganisationId { get { return _orgDoc.OrganisationId; } }
public Guid OrganisationXId { get { return _orgDoc.OrganisationXId; } }
public string TimeZone { get { return _orgDoc.TimeZone; } }
public bool Enabled { get { return _orgDoc.Enabled; } }
public decimal MinimumValue { get { return _orgDoc.MinimumValue; } }
public RuleTableValuedParameters Rules { get; private set; }
public OrganisationDTO(IOrganisationDocument orgDoc)
{
_orgDoc = orgDoc;
Rules = new RuleTableValuedParameters("#Rules", _orgDoc.Rules);
}
}
RuleTableValuedParameters implements SqlMapper.IDynamicParameters which has an AddParameters method.
When I execute the query, the #Rules parameter is never passed (using SQLProfiler). I can also see that AddParameters is never called.
Is this possible to do?
Thanks

Here's a simplified example based on your code that shows it working just fine; AddParameters is invoked correctly, and the values are conveyed to the stored procedure. As a side note: if you are using DataTable for your TVPs, the library supports that directly with no additional code needed.
public void SO29596645_TvpProperty()
{
try { connection.Execute("CREATE TYPE SO29596645_ReminderRuleType AS TABLE (id int NOT NULL)"); }
catch { }
connection.Execute(#"create proc #SO29596645_Proc (#Id int, #Rules SO29596645_ReminderRuleType READONLY)
as begin select #Id + ISNULL((select sum(id) from #Rules), 0); end");
var obj = new SO29596645_OrganisationDTO();
int val = connection.Query<int>("#SO29596645_Proc", obj.Rules, commandType: CommandType.StoredProcedure).Single();
// 4 + 9 + 7 = 20
val.IsEqualTo(20);
}
class SO29596645_RuleTableValuedParameters : Dapper.SqlMapper.IDynamicParameters {
private string parameterName;
public SO29596645_RuleTableValuedParameters(string parameterName)
{
this.parameterName = parameterName;
}
public void AddParameters(IDbCommand command, Dapper.SqlMapper.Identity identity)
{
Console.WriteLine("> AddParameters");
SqlCommand lazy = (SqlCommand)command;
lazy.Parameters.AddWithValue("Id", 7);
DataTable table = new DataTable {
Columns = {{"Id", typeof(int)}},
Rows = {{4}, {9}}
};
lazy.Parameters.AddWithValue("Rules", table);
Console.WriteLine("< AddParameters");
}
}
class SO29596645_OrganisationDTO
{
public SO29596645_RuleTableValuedParameters Rules { get; private set; }
public SO29596645_OrganisationDTO()
{
Rules = new SO29596645_RuleTableValuedParameters("#Rules");
}
}

Here's the full working DynamicParameter that I created:
public class OrganisationDynamicParameter : SqlMapper.IDynamicParameters
{
private readonly IOrganisation _orgModel;
public OrganisationDynamicParameter(IOrganisation orgModel)
{
_orgModel = orgModel;
}
public void AddParameters(IDbCommand command, SqlMapper.Identity identity)
{
SqlParameter p;
var sqlCommand = (SqlCommand)command;
sqlCommand.CommandType = CommandType.StoredProcedure;
p = sqlCommand.Parameters.Add("#OrganisationXId", SqlDbType.UniqueIdentifier);
p.Value = _orgModel.OrganisationXId;
p = sqlCommand.Parameters.Add("#Enabled", SqlDbType.Bit);
p.Value = _orgModel.Enabled;
p = sqlCommand.Parameters.Add("#Timezone", SqlDbType.NVarChar, 50);
p.Value = _orgModel.TimeZone;
p = sqlCommand.Parameters.Add("#MinimumValue", SqlDbType.Float);
p.Value = _orgModel.MinimumValue;
List<SqlDataRecord> ruleList = _orgModel.Rules.Select(MapRuleData).ToList();
if (ruleList.Count > 0)
{
p = sqlCommand.Parameters.Add("#Rules", SqlDbType.Structured);
p.Direction = ParameterDirection.Input;
p.TypeName = "ReminderRuleType";
p.Value = ruleList;
}
}
protected SqlDataRecord MapRuleData(IReminderRule value)
{
var rec = new SqlDataRecord(new[]
{
new SqlMetaData("RuleId", SqlDbType.BigInt),
new SqlMetaData("OrganisationId", SqlDbType.BigInt),
new SqlMetaData("Name", SqlDbType.NVarChar, 200),
new SqlMetaData("OffsetDays", SqlDbType.Int),
new SqlMetaData("SubjectTemplate", SqlDbType.NVarChar, -1),
new SqlMetaData("BodyTemplate", SqlDbType.NVarChar, -1)
});
rec.SetInt64(0, value.RuleId);
rec.SetInt64(1, value.OrganisationId);
rec.SetString(2, value.Name);
rec.SetInt32(3, value.OffsetDays);
rec.SetString(4, value.SubjectTemplate);
rec.SetString(5, value.BodyTemplate);
return rec;
}
}
I use this thusly:
public IOrganisation CreateOrganisation(IOrganisation organisation)
{
var dtoOrg = new OrganisationDynamicParameter(organisation);
return ExecuteSPReturningOrganisation("Organisation_Insert", dtoOrg);
}
protected IOrganisation ExecuteSPReturningOrganisation(string query, object parameters)
{
using (IDbConnection con = ConnectionFactory.CreateOpenConnection())
{
using (
SqlMapper.GridReader multi = con.QueryMultiple(query, parameters,
commandType: CommandType.StoredProcedure))
{
OrganisationModel org = multi.Read<OrganisationModel>().SingleOrDefault();
if (org != null)
{
org.Rules = multi.Read<ReminderRuleModel>().ToArray();
}
return org;
}
}
}
Cheers

JPA, error in meta-data for CLASS: more than one primary key field

I have a parent and a child class. When I run the app I'm getting following error:
Error in meta-data for com.twitterjaya.model.HistoryDeviceJPA: More than one primary key field.
I have no idea why it says I defined more than one primary key. Any suggestion would be appreciated.
#Entity(name = "HistoryJPA")
#Inheritance(strategy = InheritanceType.TABLE_PER_CLASS)
#DiscriminatorValue("HistoryJPA")
public class HistoryJPA {
#Id
String pageAddress;
String domain;
String pageTitle;
long pageVisits;
#Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
HistoryJPA that = (HistoryJPA) o;
if (!pageAddress.equals(that.pageAddress)) return false;
return true;
}
#Override
public int hashCode() {
return pageAddress.hashCode();
}
#Override
public String toString() {
return "HistoryJPA{" +
"pageAddress='" + pageAddress + '\'' +
", domain='" + domain + '\'' +
", pageTitle='" + pageTitle + '\'' +
", pageVisits=" + pageVisits +
'}';
}
public String getPageAddress() {
return pageAddress;
}
public void setPageAddress(String pageAddress) {
this.pageAddress = pageAddress;
}
public String getDomain() {
return domain;
}
public void setDomain(String domain) {
this.domain = domain;
}
public String getPageTitle() {
return pageTitle;
}
public void setPageTitle(String pageTitle) {
this.pageTitle = pageTitle;
}
public long getPageVisits() {
return pageVisits;
}
public void setPageVisits(long pageVisits) {
this.pageVisits = pageVisits;
}
}
and child class:
#Entity(name = "HistoryDeviceJPA")
#DiscriminatorValue("HistoryDeviceJPA")
public class HistoryDeviceJPA extends HistoryJPA {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private Long id;
private String userUUID;
#Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
if (!super.equals(o)) return false;
HistoryDeviceJPA that = (HistoryDeviceJPA) o;
if (!id.equals(that.id)) return false;
if (!userUUID.equals(that.userUUID)) return false;
return true;
}
#Override
public int hashCode() {
int result = super.hashCode();
result = 31 * result + id.hashCode();
result = 31 * result + userUUID.hashCode();
return result;
}
#Override
public String toString() {
return "HistoryDeviceJPA{" +
"id=" + id +
", userUUID='" + userUUID + '\'' +
'}';
}
public String getUserUUID() {
return userUUID;
}
public void setUserUUID(String userUUID) {
this.userUUID = userUUID;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}

As explained by the error message, you have two primary keys (annotated with #Id):
one in HistoryJPA on field pageAddress
one in HistoryDeviceJPA on field id
You should get rid of one of them, or create a composite primary key depending on your needs.

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