simple-db | Simple DBMS MIT 6.830 muscle | Object-Relational Mapping library

by jasonleaster Java Version: Current License: MIT

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | simple-db Summary

simple-db is a Java library typically used in Utilities, Object-Relational Mapping applications. simple-db 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.

My solutions for 6.830 labs. PLEASE DON’T COPY MY SOLUTION. I posted my implementation ONLY FOR exchanging the idea how to do it in more smarter way, but not for your answer of this awesome course. 与6.828类似，这是我完成的6.830 simple-db 重构后的代码(部分目录结构和实现风格)，请勿抄袭，仅供技术交流用。衷心感谢MIT能够提供如此棒的课程资源.

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Quality

Security

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Reuse

Support

simple-db has a low active ecosystem.

It has 11 star(s) with 6 fork(s). There are 2 watchers for this library.

It had no major release in the last 6 months.

There are 6 open issues and 7 have been closed. On average issues are closed in 51 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of simple-db is current.

Quality

simple-db has no bugs reported.

Security

simple-db has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

License

simple-db is licensed under the MIT License. This license is Permissive.

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

Reuse

simple-db 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.

Installation instructions are not available. Examples and code snippets are available.

Top functions reviewed by kandi - BETA

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

Creates a new BTreeFile with the given number of columns
Converts a set of entries into a byte array
Convert an input text file into a binary page file
This method converts the B + tree into a B + file
Insert a tuple
Try to acquire lock on a page
Creates a new BTreeFile with the specified columns
Creates a new BTreeFile with the given column and column fields
Returns the cost and cardinality of the joinSet
Returns a new BinaryJoinNode with the inner tables swapped
Restore the database system
Read the next child pointer
Reads a page from disk
Convert a data file
Merge a new result into the aggregate
Reset the iterator
Returns the next tuple generated by the join predicate
Read the next tuple from the input stream
Reads the next tuple from the source file
Merge two TupleDescs into one
Creates a new HeapFile with an empty page
Inserts a tuple into this table
Deletes all pages with the specified Tuple
Enumerate all subsets of a specific vector
Merges a new tuple into this aggregator
Displays the join plan for the given joins

Get all kandi verified functions for this library.

simple-db Key Features

No Key Features are available at this moment for simple-db.

simple-db Examples and Code Snippets

No Code Snippets are available at this moment for simple-db.

Community Discussions

Trending Discussions on simple-db

ant: srcdir attribute must be non-empty

QUESTION

ant: srcdir attribute must be non-empty

Asked 2018-Mar-06 at 23:19

Basic Setup

Ant newbie; Mac OS

What I am trying to do

https://github.com/MIT-DB-Class/course-info-2017/blob/master/lab1.md#1-getting-started.

Commands I use

git clone git@github.com:MIT-DB-Class/simple-db-hw.git
cd simple-db-hw
brew install ant
ant test

What I get after the last command

Buildfile: /Users/evan/Desktop/tmp1/simple-db-hw/build.xml

compile:

BUILD FAILED /Users/evan/Desktop/tmp1/simple-db-hw/build.xml:169: The following error occurred while executing this line: /Users/evan/Desktop/tmp1/simple-db-hw/build.xml:46: /Users/evan/Desktop/tmp1/simple-db-hw/build.xml:46: srcdir attribute must be non-empty

Total time: 0 seconds

Things I have tried

The issue with homebrew install ant? I tried to download 1.10.2.tar.gz from http://ant.apache.org/bindownload.cgi and gets the same result.

Question

What's wrong? Any advice is appreciated. Thank you!

...

ANSWER

Answered 2018-Mar-06 at 23:19

The problem is in the Compile macrodef. It tries to reference the attribute named srcdir but it is written as a standard property reference using the ${} syntax, instead of the attribute syntax which uses @{}.

So on line 46 try changing this:

Source https://stackoverflow.com/questions/49104089

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

Vulnerabilities

No vulnerabilities reported

Install simple-db

You can download it from GitHub.
You can use simple-db 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 simple-db 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 .

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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