Language: Java
Label: vulnerable
CWE: CWE-89 \u2014 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component.

Code:
    public void testFunctionJsonArrayContainsNumber() throws Exception {
        filterToSql.setFeatureType(testSchema);
        Function pointer =
                ff.function(
                        "jsonArrayContains",
                        ff.property("OPERATIONS"),
                        ff.literal("/operations"),
                        ff.literal(1));
        filterToSql.encode(pointer);
        String sql = writer.toString().trim();
        assertEquals("\"OPERATIONS\"::jsonb @> '{ \"operations\": [1] }'::jsonb", sql);
    }