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CLIF Query Environment

The CLIF Query Environment is a command line tool to easily query IFC files.

CLIF.QueryEnvironment.exe [options]

[options]:
  -q, --query        Linq query to execute

  -i, --ifc          Required. Ifc file to query

  -f, --queryFile    Text file with subsequent queries
  
  -u, --userInput    Type your queries one after another into the interface

  -v, --verbose      Shows additional processing information

  --help             Display this help screen.

  --version          Display version information.

Single query

Of course, the referenced IFC file is mandatory. You have to provide either a query or a query file. Quotes are used to mark start and end of a command line argument. However, you might need quotes in your query. For this purpose, you can escape quotes by using the double quotes two times "".

This example selects all property sets from an IFC file. Have a look at the escaped IfcPropertySet.

CLIF.QueryEnvironment.exe -q="from ifcEntity in model.Instances where ifcEntity.ExpressType.ExpressName == ""IfcPropertySet"" select ifcEntity" -i="Testdata\B_Damage_Types.ifc" -v

Query file

For further automation, you can provide a query file for processing. This file has to be a text file. An example for such a file is part of the test data within CLIF.Tests. The content of the file is depicted below. Commands are ended with a new line.

from ifcEntity in model.Instances where ifcEntity.ExpressType.ExpressName == "IfcPropertySet" select ifcEntity
from ifcEntity in model.Instances where ifcEntity.ExpressType.Name == "IfcBeam" select ifcEntity

Interactive user interface

By using the option -u and provide a file to operate on, a command line interface is started. You can type there your queries and execute them by hitting return. The user interface starts with the lines.

CLIF Query Environment
Operating on [your ifc file]
Clif>>

Going on from this, just type in your queries and retrieve the results. Use exit to leave the environment.