package com.alibaba.druid.bvt.sql.schemaStat;

import com.alibaba.druid.DbType;
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.visitor.SchemaStatVisitor;
import com.alibaba.druid.stat.TableStat;
import com.alibaba.druid.util.JdbcConstants;
import junit.framework.TestCase;

import java.util.Set;

public class SchemaStatTest14 extends TestCase {
    public void test_schemaStat() throws Exception {
        String sql = "delete r from t_res r where id=1 ";

        DbType dbType = JdbcConstants.MYSQL;
        SQLStatementParser parser = SQLParserUtils.createSQLStatementParser(sql, dbType);
        SQLStatement stmt = parser.parseStatementList().get(0);

        System.out.println(stmt);

        SchemaStatVisitor statVisitor = SQLUtils.createSchemaStatVisitor(dbType);
        stmt.accept(statVisitor);

        Set<TableStat.Relationship> relationships = statVisitor.getRelationships();
        for (TableStat.Relationship relationship : relationships) {
            System.out.println(relationship); // table1.id = table2.id
        }

        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(0, relationships.size());

        assertEquals(1, statVisitor.getColumns().size());
        assertEquals(1, statVisitor.getConditions().size());
        assertEquals(0, statVisitor.getFunctions().size());

        assertTrue(statVisitor.containsTable("t_res"));
        assertTrue(statVisitor.containsColumn("t_res", "id"));
    }
}
