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To run Odysseus a Java JDK 1.7 8 or higher needs to be installed. For a detailed tutorial for the installation look at How to install Odysseus
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The MEP Functions View provides a convenient way to look up available functions to be used in filter and mapping operators. The list includes the symbol, the return type, the arity, and the possible parameter for the function.The first column is the symbol to be used in a query. As you can see, the symbol can be overwritten allowing you to use the function on different parameter settings with slightly different semantics, i.e., the similarity function can be used on two different parameter types and performs different calculations internally. The second column defines the return type of the function. The third column is the number of parameter the function takes. Finally, the fourth column includes a list of accepted parameter types, i.e., the sin function takes an integer, long, double, or float value for the first parameter and the round takes the same for the first and the second parameter. You can also restrict the list of MEP functions by providing a search string in the upper text field. Here, you can search either by wildcards or using regular expressions to filter for a particular function symbol.
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