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#Anylogic an agent was not able to leave the port code#
#Anylogic an agent was not able to leave the port free#

The Excel file connectivity tool supports only code mode, forcing the user to learn Java, painstakingly match the row/column indexes, and rewrite the code following a change to an Excel table. They are available in AnyLogic example models: Help – Example Models – How-To models – Database Connectivity.Īdvantages of new way to load data into the model The best way to start learning built-in database is to look at How-To models. It allows to get the specified value, import the table column as a list, iterate over the column elements, etc. For users, which do not know SQL, we provide a Query Constructor (a wizard that generates the required code depending on user input). Here is the example for source block that allows to use a database table as arrival table.Īlso, there is a possibility to write the query code. Most objects support the graphical interface, from usual parameter to flowchart blocks. E.g., if you need to feed a population from a database or define arrival table at Source block, just use the graphical interface of object properties. We provide an intuitive interface for most common use cases, so the modeler dows not have to write SQL queries.

So, the database may be accessed by SQL commands or Query DSL Java code.

If the "Update data." checkbox is selected, then all changes to the source will be applied to the database.īefore starting to explore the database capabilities, let's look how we may interact with the database from the model canvas. Also, data can be simply copy-pasted from Excel to the table (and vice-versa). The database allows to import data from Excel file, Access or SQL database - just click "Create or import a table." text at database properties or the right-click context menu.

The filling process is clear and simple no need for coding. Import of initial data to the built-in database is an easy task. Also, at the end of this post you may find some tips for work with the database, and a brief description of further enhancements.Ĭonvenient access to database and one-click automatic import of data

At last, it stores the simulation statistics, simplifying the data post-processing and export.Įach of these advantages has many use cases, let's see each one in details.

It may act as an information dealer for agents, simplifying the algorithms, encapsulating the data and serving as a unified data source for parametrized variables.

It is a useful instrument for visualization of agent type hierarchy and development of the data model.

#Anylogic an agent was not able to leave the port free#

The database is now available in all editions, including free AnyLogic Personal Learning Edition.

It removes extra connectivity layer between Excel/external DB and model.

What does this mean for developers? The built-in database feature helps to build the models that require a certain amount of external data for initialization and work. do that.You must have noticed that in the latest version of AnyLogic, AnyLogic 7.2, all models obtained a new object at the project tree - the Database object. People tend to forget that with a model you are trying to represent reality. do you even need a hold block there? Think again on what you are trying to do, and revise your model based on your concept. tell the model what you want to do with the agent after the delay block, if the hold is blocked. The answer to that question, will bring you an answer to your model. If your cat is in the delay block, and now you want to move the cat out of the delay block, but the door is closed, the question is. It's not a requirement to put a queue before the hold block, but you need to think this from a more realistic way. If you try to push a cat through a closed door, the universe will tell you that the cat just cannot do that, either by you killing the cat, or the cat killing you.ĪnyLogic is doing the same thing here. The hold is a door, and if it's blocked, the door is closed