DAOMedge Files

NOTE:

This is a simple, fully documented, POJO using, light weight, fast, thoroughly tested, data access library with a code generator.

DAOMedge targets Java 17 and doesn't, strictly speaking, conform to the DAO pattern. It was developed over many years and simply works well as it is. Although DAOMedge is compiled to Java 17, you can run it using later JDKs and it will compile to that JDK (see the status label on the bottom of the screen).

For convenience the daomedgegen uses the latest daomedge.jar, but without the version number and date. This is useful to keep the projects together. You just really need the generator binary (currently daomedgegen-11.0.2-28022026.zip) as that has daomedgegen.jar, daomedge.jar (in lib/), the reservedwordsmap.properties (for syntax highlighting and reserve word avoidance), documentation, and a slightly less cheesey icon than earlier.

The actual daomedge.jar has a version number in the file name but you can use either one.

I've attempted to ensure the documentation is extensive and up to date. You can grab either the source (daomedge.odt) or the compiled version (daomedge.pdf).
They are also in the source and compiled zips respectively.

There are entries in the supporting documents (manual and READMEs) that might sound condescending but that is because I have made these mistakes so I keep adding to the documentation to remind me.

Known Issues
There is a weird issue when adding the first interface, sometimes it works, other times it fails and doesn't show up even though it is there (if you attempt to add the interface again it tells you that it is already there) I think it is a race condition, but am not sure. If you attempt to add another interface it fails with an index out of bounds exception. To get around this simply exit and restart.

Bash script to run the generator:

  #!/bin/bash  
  cd /folder/daomedge/daomedgegen/  
  java -Xmx2g -jar daomedgegen.jar

Bash script to run the generator command line interface:

  #!/bin/bash  
  cd /folder/daomedge/daomedgegen/  
  java -Xmx2g -jar daomedgegen.jar my_database

Or even:

  #!/bin/bash  
  cd /folder/daomedge/daomedgegen/  
  java -Xmx2g -jar daomedgegen.jar $*

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Sample Code

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Simplest:
List<Customer> customers = dao.select(Customer.class);

Pattern Matching:
Customer c = new Customer();
c.setSurname("Smith");
List<Customer> customers = dao.select(c);

Sort and Filter:
daotable table = dao.getTable(Customer.class);
daoproperty property1 = dao.getProperty(Customer.class, Customer.SURNAME);
daoproperty property2 = dao.getProperty(Customer.class, Customer.GIVENS);
OrderBy orderBy2 = new OrderBy(property2);
SelectColumn column1 = new SelectColumn(property1);
SelectColumn column2 = new SelectColumn(property2);
Filter filter = new PropertyFilter(table, property1, "Smith");
List<Customer> customers = dao.select(table, new SelectColumn[]{column1, column2}, filter, new OrderBy[]{orderBy2});

NotSQL Limits Simple queries can only have one table's columns in the get clasue.
Multi-table queries cannot use the * syntaxt.
Aggregate queries need the operand and value (even if it is != null or similar)

The Script
set classbase my.business;

{Query1}
get database.Customer.*
filter (database.Customer.surname = Smith | database.Customer.surname = 'Jones') & database.Customer.givens = 'John'
sort home.Person.dateOfBirth >;

{Query2}
sort home.Person.dateOfBirth >;
filter (database.Customer.surname not in [Smith, Jones) & database.Customer.givens = 'John'
get database.Customer.*

The Code For NotSQL
SimpleNotSQL notsql = new SimpleNotSQL(dao, notSQLScriptFromAbove);
List<Customer> customers = notsql.selectNotSQL("Query1");
customers = notsql.selectNotSQL("Query2");
// OR
customers = notsql.selectNotSQL(0);
customers = notsql.selectNotSQL(1);

Grab the latest documentation for a full list of examples.

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Version 12.1.0 changelog

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The DAO now caches the method/property, method/relationship, method/isloaded, and class/table annotations to speed up reading of the database by avoiding doing reflection for each object.
I've added a dialog to the table so you can see, easily, any previous extn files so you can check changes.
I've also added the connection used id when logging SQL so you can map an execute statement to a database connection. This helps in debugging.
Previous versions on the extn and inter files can be checked in the generator. Right mouse click on the contents will bring up the additional or default code.
Using the same filter and pattern type as two of the selects, you can now bulk delete rows.

As this is a pretty big change so I'm going to 12.1.0 rather than 12.0.2.

Version 12.1.0 was released on 30-Apr-2026.

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Known Issues

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In version 11.0.0 I introduced a check against used imports. If you have an import from another jar file that has the same package name, the 'Show Usage' dialog will incorrectly list it as being in use.

e.g. I have two jars, both have the same utilities package so both are flagged as being in use.