eider | Experimental Annotation Processor based Flyweight Generator | Build Tool library
kandi X-RAY | eider Summary
kandi X-RAY | eider Summary
Experimental Annotation Processor based Flyweight Generator
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Top functions reviewed by kandi - BETA
- Processes the Eider
- Preprocess an object
- Preprocesses the composite object
- Preprocesses a repeatable repeatable record
- Generate the outline
- Build repository transactional helper methods
- Build repository methods
- Build repository fields
eider Key Features
eider Examples and Code Snippets
@EiderSpec(name = "OrderStatus")
public class OrderStatusSpec
{
private boolean filled;
private long acceptedTimestamp;
private long filledTimestamp;
}
@EiderSpec(name = "Order")
public class OrderSpec
{
@EiderAttribute(maxLength = 1
@EiderRepeatableRecord
public class OrderBookItem
{
private long price;
private long size;
}
@EiderSpec(eiderId = 111, name = "OrderBook", header = false)
public class OrderBookSpec
{
private short pair;
private short venue;
@Eid
@EiderRepository(transactional = true)
@EiderSpec
public class SampleSpec
{
@EiderAttribute(key = true)
private int id;
@EiderAttribute(maxLength = 9)
private String cusip;
}
final SampleSpecRepository repository = SampleSpecReposito
Community Discussions
Trending Discussions on eider
QUESTION
I am storing MD5 hashes
as indexes of some records, I understand a good data type for this is CHAR(32)
, but what should I select for collation
?
I assume it is relevant that MD5
only support these characters: abcdef0123456789
so I need a collation that supports very few characters and no special ones ?
Eider way, which one is best collation ? Many other data rows use utf8_general_ci
in my db.
ANSWER
Answered 2020-Oct-18 at 19:58Will you need to have "A" == "a"? If so, you need a case-folding COLLATION
.
But first, I suspect your question is really about CHARACTER SET
. This is the encoding of the characters. Almost any character set can handle hex characters. ascii
is fine; latin1
is fine. I would not use any character sets other than those for MD5, UUID, country_code, postal_code, etc. And, since each of those is constant length, CHAR(..)
is useful. Virtually everywhere else, VARCHAR(..)
is 'better'.
"Collation" has to do with sorting and comparing. Once you have decided on CHARACTER SET ascii
(or latin1), then you need to decide whether you will ever need to compare a1b2
= A1B2
. If so, use ascii_general_ci
(or latin1_general_ci
). The "ci" means "case insensitive".
If you will never mix capitalization, ascii_bin
(latin1_bin
) is fine and is a trivial amount faster. "bin" means "just compare the bits"; that is, no case folding, accent stripping. etc.
Even better might be to convert from CHAR(32)
to BINARY(16)
via UNHEX()
and go the other way via HEX()
. This has no collation and cuts the space used in half. (But it makes the string unprintable.)
For other columns, ... The character set utf8mb4, not utf8, is needed for Chinese and Emoji (like your picture). I can't judge whether the _general_ci collation is appropriate without understanding more about your application.
QUESTION
I have a text file which has many irrelevant values and then have values which I have load it into a table. Sample of the file looks like this
...ANSWER
Answered 2020-Jul-06 at 21:44This is an ideal place to use regex to find only lines that fit your needs and even grouping them properly you can get out the trimmed values of the five columns already. The search expressions seems to be something like "^(K[A-Z0-9]+) +([0-9]+) +([A-Z0-9]+) +([A-Z]+) +([0-9]+) *$" or similar. It helped me a lot in programming to know regex.
QUESTION
ANSWER
Answered 2020-Feb-16 at 09:30The issue is you missed the slash after livingthings in mkdir -p livingthings/{birds..... not mkdir -p livingthings{birds.... Because of this it creates a directory named livingthingsbirds instead of livingthings/birds. But then in your touch command u r using livingthings/ so thats why it cant find that directory.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install eider
You can use eider like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the eider component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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