I have the following function script:
CREATE or REPLACE FUNCTION test1(_ids bigint[])
RETURNS TABLE
(
businessId BIGINT,
businessName VARCHAR
)
LANGUAGE plpgsql
AS
$$
BEGIN
RETURN QUERY (
SELECT id, name
FROM business b
WHERE id = any(_ids)
);
END;
$$
I can do the following and it works fine in normal psql commands:
SELECT * FROM test1(ARRAY [1,2,3])
How can I do this in Java? I tried passing an array of long, but it throws an sql grammar error.
repository:
#Query(nativeQuery = true, value = "SELECT * FROM public.test1(?)")
List<TestView> test1(long[] ids);
service:
long[] ids = {1L, 2L, 3L};
return businessRepository.test1(ids); // <-- does not work
If this is the incorrect way to pass an array / list of ids as an input parameter to a psql function, please advise.
Use a list rather than an array
#Query(nativeQuery = true, value = "SELECT * FROM public.test1(:ids)")
List<TestView> test1(#Param("ids") List<Long> ids);
Long[] ids = {1L, 2L, 3L};
return businessRepository.test1(Arrays.asList(ids));
Related
I am trying to pass a parameter to a stored procedure using the Oracle.EntityFrameworkCore package like this:
DataTable table = new DataTable();
table.Columns.Add("keyColumn", typeof(string));
table.Columns.Add("valueColumn", typeof(string));
var row = table.NewRow();
row.ItemArray = new object[]
{
entry.KeyColumn,
entry.ValueColumn
};
table.Rows.Add(row);
var parameter = new OracleParameter("entries",table);
parameter.UdtTypeName = "entry_type_list";
return context.Database.ExecuteSqlCommandAsync(
new RawSqlString( #"EXEC set_entry_list (:entries)" ),
parameter);
The stored procedure and type are defined like this:
CREATE OR REPLACE TYPE entry_type AS OBJECT
(
"keyColumn" NVARCHAR2(3),
"valueColumn" NVARCHAR2(3)
);
CREATE OR REPLACE TYPE entry_type_list AS TABLE OF entry_type;
CREATE OR REPLACE PROCEDURE set_entry_list (entries entry_type_list) AS
BEGIN
REM Doing stuff
END;
But I get an error:
System.ArgumentException: Value does not fall within the expected range.
at Oracle.ManagedDataAccess.Client.OracleParameter..ctor(String parameterName, Object obj)
The only sources for this is an answer how to do this with SQL Server, but no answer for Oracle with EFCore. The issue here seems to be that Oracle only accepts an OracleParameter whereas others use SqlParameter.
If I use the SqlParameter type like this:
var parameter = new SqlParameter("entries", SqlDbType.Structured);
parameter.TypeName = "entry_type_list";
parameter.Value = table;
I get this error:
System.InvalidCastException: Unable to cast object of type'System.Data.SqlClient.SqlParameter' to type 'Oracle.ManagedDataAccess.Client.OracleParameter'.
I also did try setting parameter.OracleDbType to different values like Blob, RefCursor, Clob or XmlType, setting parameter.DbType to Object or setting CollectionType to PLSQLAssociativeArray with no success. Also passing a list or an array of objects instead of a table did not succeed.
I currently have no idea what else I could try.
Any method to pass a big amount of entities to a stored procedure in a performant way would help. I use them with the merge-command so I need to be able to convert those parameters to a table.
I now found a solution using a temporary table and using this one as my input parameter.
As I can't pass a complete table, but an array of simple objects I have to fill this table by passing one array for each column:
var keyColumn = new OracleParameter( "keyColumn", OracleDbType.Decimal );
keyColumn.Value = values.Select( c => c.KeyColumn).ToArray();
var valueColumn = new OracleParameter( "valueColumn", OracleDbType.Decimal );
valueColumn = values.Select( c => c.ValueColumn).ToArray();
using ( var transaction = this.dbContext.Database.BeginTransaction( IsolationLevel.ReadCommitted) )
{
var connection = this.dbContext.Database.GetDbConnection() as OracleConnection;
OracleCommand cmd = connection.CreateCommand();
cmd.CommandText = #"
INSERT INTO TMP_TABLE
(
""keyColumn"",
""valueColumn""
)
VALUES (
:keyColumn,
:valueColumn)";
cmd.Parameters.Add( keyColumn );
cmd.Parameters.Add( valueColumn );
cmd.ArrayBindCount = values.Length;
var insertCount = await cmd.ExecuteNonQueryAsync();
cmd = connection.CreateCommand();
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "dbo.stored_procedure";
var result = await cmd.ExecuteNonQueryAsync();
transaction.Commit();
}
I created the temp table like this:
CREATE
GLOBAL TEMPORARY TABLE "dbo"."TMP_TABLE"
ON COMMIT DELETE ROWS
AS SELECT * FROM "dbo"."REAL_TABLE" WHERE 0=1;
And changed my stored procedure to use it:
CREATE OR REPLACE PROCEDURE stored_procedure AS
BEGIN
REM use the "dbo"."TMP_TABLE"
END;
This answer helped me with the approach of bulk inserting with one array per column. The thread also contains some further discussion about the topic and a more generic approach.
String mainQuery = "select x as CONDITION_"+i+" from xyz";
SQLQuery sqlQuery = this.getSession().createSQLQuery(mainQuery);
from this query i will get allias column like
CONDITION_x
------------
value_x(anything)
here x is int value it will increment 0,1,2...
From this i want Json like ,
[
{
"CONDITION_0" :"value",
"CONDITION_1" :"value"
}
]
And this is in spring hibernate.
Please help,TIA.
Use hibernate ResultTransformer's which converts SQLQuery result to Map<k,v> object with the alias column name in query as the k-key and row value as v-value.
String mainQuery = "select x as CONDITION_"+i+" from xyz";
SQLQuery sqlQuery = this.getSession().createSQLQuery(mainQuery);
List<Map<String,Object>> result = sqlQuery.setResultTransformer(Criteria.ALIAS_TO_ENTITY_MAP).list();
By this you can get the json result as you expected.
here is the sql statement I am trying to translate in jpa :
select
id,
act_invalidation_id,
last_modification_date,
title,
case when act_invalidation_id is null then 1 else 0 end as test
from act order by test, last_modification_date desc
The actual translation
Root<Act> act = query.from(Act.class);
builder.selectCase()
.when(builder.isNull(actRoot.get("actInvalidation")), 1)
.otherwise(0).as(Integer.class);
Expression<?> actInvalidationPath = actRoot.get("actInvalidation");
Order byInvalidationOrder = builder.asc(actInvalidationPath);
Path<Date> publicationDate = actRoot.get("metadata").get("publicationDate");
Order byLastModificationDate = builder.desc(publicationDate);
query.select(act).orderBy(byInvalidationOrder, byLastModificationDate);
entityManager.createQuery(query).getResultList();
I try to create a temporary column (named test) of Integer type and orderby this column, then orderby lastmodificationdate. The content of this new column is determined by the value of actInvalidation field.
In short: How to create a temp column with integer values, then order by this temp column in jpa ?
Thank you
I didn't test this but it should work like this:
Root<Act> act = query.from(Act.class);
Expression<?> test = builder.selectCase()
.when(builder.isNull(actRoot.get("actInvalidation")), 1)
.otherwise(0).as(Integer.class);
Expression<?> actInvalidationPath = actRoot.get("actInvalidation");
Order byInvalidationOrder = builder.asc(actInvalidationPath);
Path<Date> publicationDate = actRoot.get("metadata").get("publicationDate");
Order byLastModificationDate = builder.desc(publicationDate);
Order byTest = builder.asc(test);
query.select(act).orderBy(byTest, byInvalidationOrder, byLastModificationDate);
entityManager.createQuery(query).getResultList();
I am trying to use oracle' NVL function in nativeQuery of Spring Data Repository.
While i am passing null value in programId parameter then it is throwing exception (ORA-00932: inconsistent datatypes: expected NUMBER got BINARY) and if i am passing a valid value in "programId" then it is working properly.
public interface ProgramRulesRepository
{
public static final String FIND_PROGRAM_RULES_BY_PARTICIPANT_ID_AND_ROLE_OR_PROGRAM = " SELECT DISTINCT pr.id , pr.program_id , prgm.display_name , pr.group_id , pr.type , pr.cmmo_key FROM program prgm , program_rule pr , program_audience pa , participant_audience paa WHERE prgm.id = pa.program_id AND pr.program_id = pa.program_id AND pa.audience_id = paa.audience_id AND pr.type = :roleType AND paa.participant_id = :participantId "
+ " AND pr.program_id = NVL ( :programId ,pr.program_id )";
#Query( value = FIND_PROGRAM_RULES_BY_PARTICIPANT_ID_AND_ROLE_OR_PROGRAM, nativeQuery = true )
List<Object[]> findByParticipantIdAndRoleTypeOrProgramId( #Param( "participantId" ) Long participantId, #Param( "roleType" ) String roleType, #Param( "programId" ) Long programId );
}
Exception :
Caused by: java.sql.SQLSyntaxErrorException: ORA-00932: inconsistent datatypes: expected NUMBER got BINARY
Avoid NVL and COALESCE when using Hibernate. COALESCE function needs to have all parameters of the same type. NVL is using implicit casting which doesn't work well when there is BINARY or VARBINARY. And where this BINARY came from? Well, Hibernate is setting NULL value as type of BINARY and ignores the real datatype backed by Java. When you set logging level to trace you can see in output:
binding parameter [1] as [VARBINARY] - [null]
So when the other type of in COALESCE or NVL function is for example NUMBER, you will get that error ORA-00932.
A good solution for this problem is this:
" AND (:programId IS NULL OR pr.program_id = :programId)"
Doing this way, if your param is null this sentence will result TRUE and won't discard the register, and if it is not null will be compared with the value stored in its field.
I have faced this problem with MongoDB. But I could solve this problem by using mongoTemplate as like,
Query query = new Query();
Criteria criteria = new Criteria();
List<Criteria> orCriterias = new ArrayList<>();
if( dto.getId() != null) {
orCriterias.add(Criteria.where("id").is(Integer.parseInt(dto.getId())));
}
... so on for other fields
criteria.orOperator(orCriterias.toArray(new Criteria[orCriterias.size()]));
query.addCriteria(criteria);
List<StudentDTO> recordsList = mongoTemplate.find(query, StudentDTO.class,
"student_collection");
I have an app using sqlite client. In the app i insert the data in a table and i need the Id which is autoincreament. Is there anyway to get the id in executenonquery? s.th like sqlparameter or ...
I am using the following method to fetch data and i thought rec variable hold the id but it is always rec=1 and i dont know what this is good for?
int x= (System.Windows.Application.Current as App).db.Insert
<CsWidget>(ObjWidget, #"Insert into Tbl_Widget (Name) values(#Name");
public int Insert<T>(T obj, string statement) where T : new()
{
Open();
SQLiteCommand cmd = db.CreateCommand(statement);
int rec = cmd.ExecuteNonQuery(obj);
return rec;
}
Try ExecuteScalar method instead of ExecuteNonQuery. It can work that way depending on your SQLite wrapper. If not the separate query after insert is your only way.
As #gleb.kudr said, a separate query after the insert is the only way.
cmd.ExecuteNonQuery();
cmd.CommandText = "SELECT LAST_INSERT_ROWID()";
object r = cmd.ExecuteScalar();
int id = 0;
int.TryParse( r.ToString(), out id );