Adding multiple schemas to schemainclusionrule schema crawler

Question

I have to add selected schemas to be crawled using schemacrawler. How can we add multiple schemas into inclusion rule of schemacrawler?

like :

final SchemaCrawlerOptions options = new SchemaCrawlerOptions();
options.setSchemaInclusionRule(new InclusionRule("schema1,schema2", InclusionRule.NONE));

Answer 1

InclusionRule accepts regexp pattern. You can pass java.util.regex.Pattern instance or String, in latter case it will be compiled for you. If I am not mistaken, you can use | sign to make pattern match multiple options. E.g., "schema1|schema2".

You can test your patterns with a simple program; e.g.

import java.util.regex.Pattern;

public class PatternTest {
    public static void main(String[] args) {
        Pattern p = Pattern.compile("schema1|schema2");
        System.out.println(p.matcher("schema0").matches());
        System.out.println(p.matcher("schema1").matches());
        System.out.println(p.matcher("schema2").matches());
        System.out.println(p.matcher("schema3").matches());
    }
}

.. which prints:

false
true
true
false