culvert | Secondary indexing for structured and unstructured data | SQL Database library

by booz-allen-hamilton Java Version: Current License: Apache-2.0

X-Ray Key Features Code Snippets Community Discussions(8)Vulnerabilities Install Support

kandi X-RAY | culvert Summary

culvert is a Java library typically used in Database, SQL Database applications. culvert has no bugs, it has no vulnerabilities, it has build file available, it has a Permissive License and it has low support. You can download it from GitHub.

Secondary indexing is a common design pattern in BigTable-like databases that allows users to index one or more columns in a table. This technique enables fast search of records in a database based on a particular column instead of the row id, thus enabling relational-style semantics in a NoSQL environment. This is accomplished by representing the index either in a reserved namespace in the table or another index table. Despite the fact that this is a common design pattern in BigTable-based applications, most implementations of this practice to date have been tightly coupled with a particular application. As a result, few general-purpose frameworks for secondary indexing on BigTable-like databases exist, and those that do are tied to a particular implementation of the BigTable model. We developed a solution to this problem called Culvert that supports online index updates as well as a variation of the HIVE query language. In designing Culvert, we sought to make the solution pluggable so that it can be used on any of the many BigTable-like databases (HBase, Cassandra, etc.). Our goal with Culvert is to make an easy, extensible tool for use in the entire NoSQL community.

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Quality

Security

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Support

culvert has a low active ecosystem.

It has 43 star(s) with 14 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

There are 0 open issues and 1 have been closed. There are 3 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of culvert is current.

Quality

culvert has 0 bugs and 0 code smells.

Security

culvert has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

culvert code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

culvert is licensed under the Apache-2.0 License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

culvert releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

culvert saves you 6038 person hours of effort in developing the same functionality from scratch.

It has 12595 lines of code, 882 functions and 145 files.

It has medium code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed culvert and discovered the below as its top functions. This is intended to give you an instant insight into culvert implemented functionality, and help decide if they suit your requirements.

Returns an array of input splits
Returns an array of indices assigned to this client
Recursively builds the cross product of the given map
Gets the byte representation of a primitive type
This is the main access method for the query
Get the value of a binary configuration setting
Creates an iterator over the rows returned by the given get
Increments the given byte array
This method is used to dispatch the query
Compares two ByteBuffers
Creates a table
Adds an index to the primary table
Handle a Put operation
Returns a string representation of this index range
Writes the DataOutput
Gets the next result
Parse an index row id and return the row id
Custom deserialization
Executes a remote operation
Performs the creation of the table
Gets the result iterator
Returns a string representation of this object
Scan get the results from the get operation
Returns the next result
Serialize the given object
Deserialize this instance

Get all kandi verified functions for this library.

culvert Key Features

No Key Features are available at this moment for culvert.

culvert Examples and Code Snippets

No Code Snippets are available at this moment for culvert.

Community Discussions

Trending Discussions on culvert

Parse JSON nested arrays in Excel in specific way

Overwrite an specific row in a txt file using Python

Need another way to compare strings node.js if else statement crashes the call stack

Create a macro inside a new created workbook

Copying a specific range from one worksheet to another worksheet

Only Copying from a specific range and using union

Combine two Oracle SQL queries with one LEFT OUTER JOIN and two INNER JOINS from four tables

How to get the first row in a bs4 findall result using python?

QUESTION

Parse JSON nested arrays in Excel in specific way

Asked 2020-Feb-06 at 04:42

I got some help and I wasn't sure if I should continue this in the original question or start a new one since technically it is a new question (I chose new but let me know what you guys prefer for next time).

I figured out how to parse the standard set of information into different columns. I'm having trouble getting the nested arrays to parse. It gives a runtime error 5 when it gets to that part of the code. The array under customfields needs to be parsed into columns but the estimate lines array contains part/pricing information that needs to be parsed into rows.

Here is the code I've written so far:

...

ANSWER

Answered 2020-Feb-05 at 04:44

Here is VBA example showing how that data could be parsed. Import JSON.bas and jsonExt.bas modules from VBA JSON parser into the VBA project for JSON processing, and include a reference to "Microsoft Scripting Runtime" (take a look here how to import module and add reference).

Source https://stackoverflow.com/questions/60044917

QUESTION

Overwrite an specific row in a txt file using Python

Asked 2018-Dec-21 at 15:49

I have an heterogeneous txt file which I need to overwrite an specific row in the middle of it. I've tried to do this with pandas function at, but it just overwrite the dataframe. With csv I didn't succeeded either.

The idea is to allow the user set some parameters and then save this:

...

ANSWER

Answered 2018-Dec-21 at 14:53

Maybe straightforward approach will suite you?

Source https://stackoverflow.com/questions/53886718

QUESTION

Need another way to compare strings node.js if else statement crashes the call stack

Asked 2018-May-11 at 11:33

I am having a problem I have a huge list of strings I need to compare and if a match is found it sets a variable. I am trying to do this in node.js express app. When I try to run this as an if/else statement in a foreach loop the call stack is exceeded. I need another way to compare strings and set a variable if a match is found. The data I am comparing has 8000 rows. and at times we will be running this against 200 strings. is this possible?

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ANSWER

Answered 2018-May-11 at 11:33

I'd consider looking at a database for this sort of data. However if you decide not to, we can still do this fairly easily. You'll want to construct a "mapping object" which stores the data, and then look through that rather than creating a giant if statement series. Here is an incredibly simple example with a little bit of data, this approach uses an array and a for each loop to look up the data.

Source https://stackoverflow.com/questions/50284090

QUESTION

Create a macro inside a new created workbook

Asked 2018-Feb-20 at 15:06

I have workbooks that I create and copy values to, from one master spreadsheet. The only problem I'm having is that I can't limit the scroll area because the scroll area doesn't save upon being closed. Is there a way I can make a macro inside each new workbook which limits the scroll area whenever the new workbooks that are created are opened? Here is what I have right now:

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ANSWER

Answered 2018-Feb-20 at 15:06

Although you solved your question yourself, in case anyone finds this in future - the easiest solution to adding code to a newly created workbook is to base the new workbook on a macro-enabled template that already holds the desired code. So instead of

Source https://stackoverflow.com/questions/48887572

QUESTION

Copying a specific range from one worksheet to another worksheet

Asked 2018-Feb-17 at 06:10

I have a worksheet which I'd like to comb through for a specific program name. When that program name is found, my code would select the correct row from columns A to CV, and would continue to do that until the last row has cell values. Finally it would copy the selected rows and paste them into a new workbook that is created.

With that being said, my rng union (in my For i loop) is not working for some reason. It's copying values from the new workbook that I am creating rather than from the workbook, wbthis. I've tried using test.Range(Cells(i,1), Cells(i, 78)), but that doesn't work either. The commented For loop that selects the entire row works, but I don't want the entire row.

...

ANSWER

Answered 2018-Feb-17 at 02:59

Before For i = 1 To 2000 try adding wbThis.Activate. Sometimes if the workbook isn't active first, it won't allow you to operate within it.

EDIT:

You're also using ActiveSheet, which can be dangerous. Given that you're creating a workbook and adding sheets before this line, I'd question what the actual "active sheet" is. If you instead reference the sheet name there, that's a much better practice and ensures you're working with the intended sheet.

Source https://stackoverflow.com/questions/48835017

QUESTION

Only Copying from a specific range and using union

Asked 2018-Feb-16 at 20:20

I'm trying to copy values from an excel worksheet to another excel workbook. I'm getting a

run time 91 object variable error

at rng.copy. But I don't understand why it's not working. I only want to copy from row A to CV when the program matches the cell value. Using my commented for loop works, but that copies the entire row. Here is my code:

...

ANSWER

Answered 2018-Feb-16 at 20:20

Try

Source https://stackoverflow.com/questions/48833855

QUESTION

Combine two Oracle SQL queries with one LEFT OUTER JOIN and two INNER JOINS from four tables

Asked 2017-Oct-17 at 17:05

I have two sql queries in Oracle that I would like to combine. The first query returns domain descriptions from a table and the second query will return only the domain descriptions that exist within the input parameter(COST_CENTER).

1st query:

...

ANSWER

Answered 2017-Oct-17 at 17:05

Try this using a with clause. It is untested though as there is no sample data.

Source https://stackoverflow.com/questions/46794773

QUESTION

How to get the first row in a bs4 findall result using python?

Asked 2017-Feb-15 at 12:34

MY CODE IS GIVEN BELOW

...

ANSWER

Answered 2017-Feb-15 at 12:00

try soup.find instead of soup.findAll.

This will only return the first result.

Source https://stackoverflow.com/questions/42248735

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install culvert

You can download it from GitHub.
You can use culvert 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 culvert 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 .