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jeo's Introduction

jeo - lightweight geo library for the jvm

This project is currently not maintained. Pull Requests are welcome though.

Building

Building jeo requires the following:

Once build pre-requisites are satisfied build with:

mvn install

Adding jeo to your application

Add the jitpack repository:

  allprojects {
    repositories {
      ...
      maven { url 'https://jitpack.io' }
    }
  }

Afterwards, you can add dependencies for the complete library including all submodules (com.github.jeo:jeo:$version) or or single submodules (com.github.jeo.jeo:$submodule:$version).

jeo's People

Contributors

ahocevar avatar dependabot[bot] avatar hjanetzek avatar ironjan avatar ischneider avatar jdeolive avatar jericks avatar ryantxu avatar tsoliman avatar

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jeo's Issues

filter attributes when querying

At the moment all forms are written so that they include all attributes from the underlying format. It is much more efficient to include only those attributes that are required.

some gpkg field type conversions missing/invalid

Long, Short, etc. -> INTEGER (from sqlite docs: The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.)
Float -> REAL

This will require a better (or reversed) data structure than used in GeoPkgTypes (as it only allows a single key).

These merit discussion:
BigDecimal -> ?
BigDecimal comes from the shapefile driver currently. When writing to a gpkg, the field gets transformed into a String (TEXT) due to a missing mapping. The issue is the potential for data loss if we use a different storage type. Remaining as a string may not work either.

Date/Time -> ?
As there is no date support in sqlite so looks like we have to do this manually. While I can create a column as CREATE TABLE Y(value DATETIME); and see that the schema records this, the JDBC driver doesn't return this in the DB metadata, making our task more difficult.

Missing sources

In package io.jeo.filter.cql the following files are missing:

ParseException
ECQLParser
FilterCompilationUnit

Change maven groupId to io.jeo

One of the requirements of pushing to central is that the groupId match a domain that the project has control over. We have jeo.io but not jeo.org.

v0.7 repo question

The latest version of jeo I see in maven central is v0.6 is v0.7 available in a different maven repo?

mvn install

I have downloaded the jeo-master zip file. Having installed maven I have run this command:
mvn install

this produces the following error, which I also get having loaded jeo-master into Netbeans, and issued a build command.
Please could you help suggest what I am doing wrong?
Thanks.


T E S T S

Error: Could not find or load main class Files
Picked up JAVA_TOOL_OPTIONS: -Djava.vendor="Sun Microsystems Inc."

Results :

Tests run: 0, Failures: 0, Errors: 0, Skipped: 0

[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary:
[INFO]
[INFO] jeo ................................................ SUCCESS [ 4.434 s]
[INFO] Core ............................................... FAILURE [ 8.876 s]

Version protobuf format

To allow the format to evolve and remain backward compatible, or at least provide a sensible error message include a version in the format.

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