private Query toTwoHandSidedQuery(Operation<?> operation, Occur occur, QueryMetadata metadata) {
Query lhs = toQuery(operation.getArg(0), metadata);
Query rhs = toQuery(operation.getArg(1), metadata);
BooleanQuery bq = new BooleanQuery();
bq.add(createBooleanClause(lhs, occur));
bq.add(createBooleanClause(rhs, occur));
return bq;
}
private Query toQuery(Operation<?> operation, QueryMetadata metadata) {
Operator op = operation.getOperator();
if (op == Ops.OR) {
return toTwoHandSidedQuery(operation, Occur.SHOULD, metadata);
} else if (op == Ops.AND) {
return toTwoHandSidedQuery(operation, Occur.MUST, metadata);
} else if (op == Ops.NOT) {
BooleanQuery bq = new BooleanQuery();
bq.add(new BooleanClause(toQuery(operation.getArg(0), metadata), Occur.MUST_NOT));
bq.add(new BooleanClause(new MatchAllDocsQuery(), Occur.MUST));
return bq;
} else if (op == Ops.LIKE) {
return like(operation, metadata);
} else if (op == Ops.LIKE_IC) {
throw new IgnoreCaseUnsupportedException();
} else if (op == Ops.EQ) {
return eq(operation, metadata, false);
} else if (op == Ops.EQ_IGNORE_CASE) {
throw new IgnoreCaseUnsupportedException();
} else if (op == Ops.NE) {
return ne(operation, metadata, false);
} else if (op == Ops.STARTS_WITH) {
return startsWith(metadata, operation, false);
} else if (op == Ops.STARTS_WITH_IC) {
throw new IgnoreCaseUnsupportedException();
} else if (op == Ops.ENDS_WITH) {
return endsWith(operation, metadata, false);
} else if (op == Ops.ENDS_WITH_IC) {
throw new IgnoreCaseUnsupportedException();
} else if (op == Ops.STRING_CONTAINS) {
return stringContains(operation, metadata, false);
} else if (op == Ops.STRING_CONTAINS_IC) {
throw new IgnoreCaseUnsupportedException();
} else if (op == Ops.BETWEEN) {
return between(operation, metadata);
} else if (op == Ops.IN) {
return in(operation, metadata, false);
} else if (op == Ops.NOT_IN) {
return notIn(operation, metadata, false);
} else if (op == Ops.LT) {
return lt(operation, metadata);
} else if (op == Ops.GT) {
return gt(operation, metadata);
} else if (op == Ops.LOE) {
return le(operation, metadata);
} else if (op == Ops.GOE) {
return ge(operation, metadata);
} else if (op == LuceneOps.LUCENE_QUERY) {
@SuppressWarnings("unchecked") // This is the expected type
Query rv = ((Constant<Query>) operation.getArg(0)).getConstant();
return rv;
}
throw new UnsupportedOperationException("Illegal operation " + operation);
}
protected Query like(Operation<?> operation, QueryMetadata metadata) {
verifyArguments(operation);
Path<?> path = getPath(operation.getArg(0));
String field = toField(path);
String[] terms = convert(path, operation.getArg(1));
if (terms.length > 1) {
BooleanQuery bq = new BooleanQuery();
for (String s : terms) {
bq.add(new WildcardQuery(new Term(field, "*" + s + "*")), Occur.MUST);
}
return bq;
}
return new WildcardQuery(new Term(field, terms[0]));
}
protected Query endsWith(Operation<?> operation, QueryMetadata metadata, boolean ignoreCase) {
verifyArguments(operation);
Path<?> path = getPath(operation.getArg(0));
String field = toField(path);
String[] terms = convertEscaped(path, operation.getArg(1), metadata);
if (terms.length > 1) {
BooleanQuery bq = new BooleanQuery();
for (int i = 0; i < terms.length; ++i) {
String s = i == terms.length - 1 ? "*" + terms[i] : "*" + terms[i] + "*";
bq.add(new WildcardQuery(new Term(field, s)), Occur.MUST);
}
return bq;
}
return new WildcardQuery(new Term(field, "*" + terms[0]));
}
protected Query in(Operation<?> operation, QueryMetadata metadata, boolean ignoreCase) {
Path<?> path = getPath(operation.getArg(0));
String field = toField(path);
@SuppressWarnings("unchecked") // This is the second argument type
Constant<Collection<?>> collConstant = (Constant<Collection<?>>) operation.getArg(1);
Collection<?> values = collConstant.getConstant();
BooleanQuery bq = new BooleanQuery();
if (Number.class.isAssignableFrom(path.getType())) {
for (Object value : values) {
TermQuery eq = new TermQuery(new Term(field, convertNumber((Number) value)));
bq.add(eq, Occur.SHOULD);
}
} else {
for (Object value : values) {
String[] str = convert(path, value);
bq.add(eq(field, str, ignoreCase), Occur.SHOULD);
}
}
return bq;
}
protected Query ne(Operation<?> operation, QueryMetadata metadata, boolean ignoreCase) {
BooleanQuery bq = new BooleanQuery();
bq.add(new BooleanClause(eq(operation, metadata, ignoreCase), Occur.MUST_NOT));
bq.add(new BooleanClause(new MatchAllDocsQuery(), Occur.MUST));
return bq;
}