graphdb/titan0/src/main/java/com/thinkaurelius/titan/diskstorage/solr/Solr5Index.java [552:568]:
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                Cmp numRel = (Cmp) titanPredicate;
                switch (numRel) {
                    case EQUAL:
                        return (key + ":" + queryValue);
                    case NOT_EQUAL:
                        return ("-" + key + ":" + queryValue);
                    case LESS_THAN:
                        //use right curly to mean up to but not including value
                        return (key + ":[* TO " + queryValue + "}");
                    case LESS_THAN_EQUAL:
                        return (key + ":[* TO " + queryValue + "]");
                    case GREATER_THAN:
                        //use left curly to mean greater than but not including value
                        return (key + ":{" + queryValue + " TO *]");
                    case GREATER_THAN_EQUAL:
                        return (key + ":[" + queryValue + " TO *]");
                    default: throw new IllegalArgumentException("Unexpected relation: " + numRel);
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graphdb/titan0/src/main/java/com/thinkaurelius/titan/diskstorage/solr/Solr5Index.java [636:653]:
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                Cmp numRel = (Cmp) titanPredicate;

                switch (numRel) {
                    case EQUAL:
                        return (key + ":" + queryValue);
                    case NOT_EQUAL:
                        return ("-" + key + ":" + queryValue);
                    case LESS_THAN:
                        //use right curly to mean up to but not including value
                        return (key + ":[* TO " + queryValue + "}");
                    case LESS_THAN_EQUAL:
                        return (key + ":[* TO " + queryValue + "]");
                    case GREATER_THAN:
                        //use left curly to mean greater than but not including value
                        return (key + ":{" + queryValue + " TO *]");
                    case GREATER_THAN_EQUAL:
                        return (key + ":[" + queryValue + " TO *]");
                    default: throw new IllegalArgumentException("Unexpected relation: " + numRel);
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