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I want to sequentially parse MVEL as follows:
HashMap myData = new HashMap(){{ put("x", 1); }}
eval("y = 2", ...) // assign value to y
...
eval("x + y", myData, ...) // expect 3
Is this possible? If so, how?
Just share the variable resolver across expression evaluations:
VariableResolverFactory vars = new MapVariableResolverFactory(new HashMap(){{ put(“x”, 1); }});
MVEL.eval(“y = 2”, vars):
MVEL.eval(“x + y”, vars);