berkeley-db

问题 In my Java code, I am using Guava's Multimap (com.google.common.collect.Multimap) by using this: Multimap<Integer, Integer> Index = HashMultimap.create() Here, Multimap key is some portion of a URL and value is another portion of the URL (converted into an integer). Now, I assign my JVM 2560 Mb (2.5 GB) heap space (by using Xmx and Xms). However, it can only store 9 millions of such (key,value) pairs of integers (approx 10 million). Now, issue is, I can provide JVM only limited amount of

问题 In my Java code, I am using Guava's Multimap (com.google.common.collect.Multimap) by using this: Multimap<Integer, Integer> Index = HashMultimap.create() Here, Multimap key is some portion of a URL and value is another portion of the URL (converted into an integer). Now, I assign my JVM 2560 Mb (2.5 GB) heap space (by using Xmx and Xms). However, it can only store 9 millions of such (key,value) pairs of integers (approx 10 million). Now, issue is, I can provide JVM only limited amount of

问题 I have to access and write to some berkeley db files that other applications share. I really haven't found anything out there about using this with PHP. It really doesn't seem very popular. Does anyone have any links or resources that I might be able to use to get things rolling? Thanks! 回答1: Isn't this what the dba functions are for? http://php.net/manual/en/book.dba.php I've had some code some years ago with that. Didn't use it much however, because it was a somewhat inefficient data store.

问题 If you arrive at a pre-existing Subversion repository, how can you determine whether it was created with a BDB or fsfs backend storage method? 回答1: Open the file repository\db\fs-type with a text editor. It either contains bdb or fsfs indicating which backend it uses. 来源： https://stackoverflow.com/questions/6122054/how-can-i-determine-whether-a-subversion-repository-was-created-with-a-bdb-or-fs

问题 Below is my code: #include <stdio.h> #include <stdlib.h> #include <string.h> #include <json/json.h> #include <curl/curl.h> #include <sys/types.h> #include <db.h> #define DATABASE "access.db" int db_json(char *val, char *key1); void json_parse(char* str); struct MemoryStruct { char *memory; size_t size; }; char *begin = "<return>"; char *end = "</return>"; char *token; char *json; char *newstr = NULL; char *str = NULL; char *str1 = NULL; char *str2 = NULL; char *str3 = NULL; char *finalstr =

问题 BerkeleyDB is the database equivalent of a Ruby hashtable or a Python dictionary except that you can store multiple values for a single key. My question is: If you wanted to store a complex datatype in a storage structure like this, how could you go about it? In a normal relational table, if you want to represent a Person, you create a table with columns of particular data types: Person -id:integer -name:string -age:integer -gender:string When it's written out like this, you can see how a

问题 i really cant figure out where my problem is. Im using Titan 0.5.0 (It's the same problem with the newer Titan versions...) I want to load a bunch of vertices and edges from a csv file with 100k entries (each line results in at least 3 nodes and some edges) into my graph. It's taking about 5 minutes to finally complete the import. So i tried the same with the configuration storage.batch-loading = true. Well it's significant faster with only 2 minutes to complete the import. But the problem is

问题 when i am writing 1033 record then it write successfully but when i am writing 5,00,000 record the it give following error Exception in thread "main" java.lang.OutOfMemoryError: Java heap space at java.util.regex.Pattern.compile(Unknown Source) at java.util.regex.Pattern.<init>(Unknown Source) at java.util.regex.Pattern.compile(Unknown Source) at java.lang.String.split(Unknown Source) at java.lang.String.split(Unknown Source) at WriteDataUsingCursor.main(WriteDataUsingCursor.java:31) 回答1: The

问题 When I compiled the sample codes of C++, I got following info: c++ excxx_example_database_read.cpp -o dbApp -I /usr/local/BerkeleyDB.5.0/include/ Undefined symbols: "Dbt::Dbt(void*, unsigned int)", referenced from: show_vendor(MyDb&, char const*)in ccnaWItX.o show_item(MyDb&, MyDb&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >&)in ccnaWItX.o "Dbc::get(Dbt*, Dbt*, unsigned int)", referenced from: show_all_records(MyDb&, MyDb&) in ccnaWItX.o show_item(MyDb&, MyDb&, std

问题 I create a Berkeley database, and operate with it using bsddb module. And I need to store there information in a style, like this: username = '....' notes = {'name_of_note1':{ 'password':'...', 'comments':'...', 'title':'...' } 'name_of_note2':{ #keys same as previous, but another values } } This is how I open database db = bsddb.btopen['data.db','c'] How do I do that ? 回答1: So, first, I guess you should open your database using parentheses: db = bsddb.btopen('data.db','c') Keep in mind that