content: package com.alibaba.druid.bvt.sql.schemaStat;
  
  import com.alibaba.druid.sql.SQLUtils;
  import com.alibaba.druid.sql.ast.SQLStatement;
  import com.alibaba.druid.sql.parser.SQLParserUtils;
  import com.alibaba.druid.sql.parser.SQLStatementParser;
  import com.alibaba.druid.sql.repository.SchemaObject;
  import com.alibaba.druid.sql.repository.SchemaObjectType;
  import com.alibaba.druid.sql.repository.SchemaRepository;
  import com.alibaba.druid.sql.visitor.SchemaStatVisitor;
  import com.alibaba.druid.util.JdbcConstants;
  import junit.framework.TestCase;
  
  public class SchemaStatTest15 extends TestCase {
      public void test_schemaStat() throws Exception {
          SchemaRepository repository = new SchemaRepository(JdbcConstants.MYSQL);
          repository.acceptDDL("create table table1 (fid bigint, f1 varchar(100), f2 varchar(100))");
  
          String sql = "select * from table1 t where t.f3 = 3";
  
          SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, JdbcConstants.MYSQL);
          SQLStatement stmt = parser.parseStatementList().get(0);
  
          System.out.println(stmt);
  
          repository.resolve(stmt);
  
          SchemaStatVisitor statVisitor = SQLUtils.createSchemaStatVisitor(repository);
          stmt.accept(statVisitor);
  
          System.out.println("Tables : " + statVisitor.getTables());
          System.out.println(statVisitor.getColumns());
  //        System.out.println(statVisitor.getGroupByColumns()); // group by
          System.out.println("relationships : " + statVisitor.getRelationships()); // group by
          System.out.println(statVisitor.getConditions());
  
          assertEquals(5, statVisitor.getColumns().size());
          assertEquals(1, statVisitor.getConditions().size());
          assertEquals(0, statVisitor.getFunctions().size());
  
          assertTrue(statVisitor.containsTable("table1"));
          assertTrue(statVisitor.containsColumn("table1", "f1"));
          assertTrue(statVisitor.containsColumn("table1", "f2"));
          assertTrue(statVisitor.containsColumn("UNKNOWN", "f3"));
      }
  
      public void test_schemaStat_2() throws Exception {
          SchemaRepository repository = new SchemaRepository(JdbcConstants.MYSQL);
          repository.acceptDDL("create table table1 (fid bigint, f1 varchar(100), f2 varchar(100));");
          repository.acceptDDL("create view view1 as select fid table1 where fid = 1;");
  
          SchemaObject viewObject = repository.findView("view1");
          System.out.println(viewObject);
  
          assertEquals("view1", viewObject.getName());
          assertEquals(SchemaObjectType.View, viewObject.getType());
      }
  }
  