predicate

问题 In Winform application using EntityFramework, I implement a generic Search / Filter UI Components using BindingSource of the BaseForm and build search/filter string expression dynamically from user inputs and properties of the DataSource of BindingSource (Context entity). Find and Filter aren't supported by the BindingSource in EntityFramework, because the query result of ObjectContext or DataContext was IEnumerable type, which didn't implement IBindingList interface ref As a workaround I

问题 In Winform application using EntityFramework, I implement a generic Search / Filter UI Components using BindingSource of the BaseForm and build search/filter string expression dynamically from user inputs and properties of the DataSource of BindingSource (Context entity). Find and Filter aren't supported by the BindingSource in EntityFramework, because the query result of ObjectContext or DataContext was IEnumerable type, which didn't implement IBindingList interface ref As a workaround I

问题 How can i serialize a predicate obtained from java ScriptEngine nashorn? or how can i cast jdk.nashorn.javaadapters.java.util.function.Predicate to Serializable? Here is the case: I have this class import java.io.Serializable; import java.util.function.Predicate; public class Filter implements Serializable { private Predicate<Object> filter; public Predicate<Object> getFilter() { return filter; } public void setFilter(Predicate<Object> filter) { this.filter = filter; } public boolean evaluate

问题 I have a table that supposed to be searched with multiple columns, which can have multiple values create table t as select * from all_objects; create bitmap index IDX_DATA_OBJECT_ID on T (DATA_OBJECT_ID); create bitmap index IDX_LAST_DDL_TIME on T (LAST_DDL_TIME); create bitmap index IDX_OBJECT_NAME on T (OBJECT_NAME); create bitmap index IDX_OBJECT_TYPE on T (OBJECT_TYPE); create or replace type strarray as table of varchar2(4000) CREATE OR REPLACE PROCEDURE p_search(op_cursor out SYS

问题 Programm Sketch I create a HiveContext hiveContext . With that context, I create a DataFrame df from a JDBC relational table. I register the DataFrame df via df.registerTempTable("TESTTABLE") . I start a HiveThriftServer2 via HiveThriftServer2.startWithContext(hiveContext) . The TESTTABLE contains 1,000,000 entries, columns are ID (INT) and NAME (VARCHAR) +-----+--------+ | ID | NAME | +-----+--------+ | 1 | Hello | | 2 | Hello | | 3 | Hello | | ... | ... | With Beeline I access the SQL

问题 The following works to display the list of "Pins" on a table and I can change _category using an actionsheet successfully. I want to only show results that match the given category (i.e. Travel), but still be able to add Pins that don't have the same category (i.e. Home) to managedObjectContext. I have tried many ways to use a predicate to filter the fetched data (by comparing _category to the 'category' property of Pin) to no avail - the furthest I've gotten still showed all of my entries

问题 Please suggest on how to implement case insensitive search using querybuilder in CQ5. My code is as below ... paramMap.put("1_property", searchType); paramMap.put("1_property.value", "%" + searchString + "%"); paramMap.put("1_property.operation", "like"); paramMap.put("2_property", "documentId"); paramMap.put("2_property.operation", "exists"); paramMap.put("3_orderby.sort", "asc"); paramMap.put("p.limit", "0"); searchType is the node property searchString is the string that needs to be

问题 I need to recognize arrays of integers in Fortran's I4 format (stands for an integer of width four) as the following example: Using a pure context-free grammar: WS : ' ' ; MINUS : '-' ; DIGIT : '0'..'9' ; int4: WS WS (WS| MINUS ) DIGIT | WS (WS| MINUS ) DIGIT DIGIT | (WS| MINUS | DIGIT ) DIGIT DIGIT DIGIT ; numbers : int4*; The above example is correctly matched: However if I use semantic predicates to encode semantic constraints of rule int4 : int4 scope { int n; } @init { $int4::n = 0; } :

问题 I'm having a problem with EF and Predicate Builder. I've been through all the instructions and I'm pretty sure I'm doing everything right, but when I run SQL Profiler and inspect the query going to the database, it's ignoring my predicates and getting every record in the table, and this table is currently up to about 600,000 rows so it slows things down a little. My predicates then get applied after the database has queried. Can someone please tell me what I'm missing? var predicate =

问题 I want to modify the TTL of all the records that were accidentally set with a 'never expire' TTL (-1 in the client). How would I do that? 回答1: Just to clarify, setting a TTL of -1 in the client means never expire (equivalent to a default-ttl of 0 in the server's aerospike.conf file), while setting a TTL of 0 in the client means inherit the default-ttl for this namespace . With Predicate Filtering: If you're using the Java, C, C# and Go clients the easiest way to identify the records with a