mihaibudiu commented on code in PR #4434:
URL: https://github.com/apache/calcite/pull/4434#discussion_r2164658621
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elasticsearch/src/main/java/org/apache/calcite/adapter/elasticsearch/QueryBuilders.java:
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@@ -497,14 +510,80 @@ static class RegexpQueryBuilder extends QueryBuilder {
private final String fieldName;
@SuppressWarnings("unused")
private final String value;
+ @SuppressWarnings("unused")
+ private String escape;
RegexpQueryBuilder(final String fieldName, final String value) {
+ this(fieldName, value, "\\");
+ }
+
+ RegexpQueryBuilder(final String fieldName, final String value, final
String escape) {
+ requireNonNull(fieldName, "fieldName");
+ requireNonNull(value, "value");
+ requireNonNull(escape, "escape");
this.fieldName = fieldName;
- this.value = value;
+ this.escape = escape;
+ // replace % to * and _ to ? for sql with like operator
+ HashMap<String, String> kv = new HashMap<>();
+ kv.put("%", "*");
+ kv.put("_", "?");
+ this.value = replaceWildcard(value, kv, escape);
+ }
+
+ public static String replaceWildcard(String value, Map<String, String> kv,
String escape) {
Review Comment:
SqlFunctions has an implementation of like, I wonder whether anything there
can be reused.
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