Reputation: 1
I wanted to convert sql query from one sql dialect to other like query written in mysql to casendra, mssql, postgresql etc. for this i have used apache calcite but getting issue. Here i what i have tried
import org.apache.calcite.sql.SqlNode;
import org.apache.calcite.sql.parser.SqlParser;
import org.apache.calcite.sql.parser.SqlParserConfig;
import org.apache.calcite.sql.dialect.SqlDialect;
import org.apache.calcite.sql.parser.impl.SqlParserImpl;
public class App
{
public static void main(String[] args) {
// Example SQL query in source dialect (MySQL)
String sourceSqlQuery = "SELECT * FROM my_table WHERE column1 = 'value' limit 10;";
// Configure source and target dialects
SqlDialect sourceDialect = SqlDialect.DatabaseProduct.MYSQL.getDialect();
SqlDialect targetDialect = SqlDialect.DatabaseProduct.POSTGRESQL.getDialect();
// Configure SQL parser with the source dialect
SqlParser.Config parserConfig = SqlParser.configBuilder()
.setParserFactory(SqlParserImpl.FACTORY)
.setConformance(SqlParser.Config.DEFAULT.getConformance())
.setQuoting(sourceDialect.quoting())
.setUnquotedCasing(sourceDialect.getUnquotedCasing())
.setQuotedCasing(sourceDialect.getQuotedCasing())
.setIdentifierMaxLength(SqlParser.DEFAULT_IDENTIFIER_MAX_LENGTH)
.build();
// Parse the SQL query using the configured parser
SqlParser parser = SqlParser.create(sourceSqlQuery, parserConfig);
SqlNode sqlNode = parser.parseQuery();
// Generate equivalent SQL query in the target dialect
String targetSqlQuery = sqlNode.toSqlString(targetDialect).getSql();
// Output the converted SQL query
System.out.println("Converted SQL query in target dialect:");
System.out.println(targetSqlQuery);
}
}
getting issue as
@/tmp/cp_btv8s778pv9oipb0t7f7r60sa.argfile com.azminds.App
Exception in thread "main" java.lang.Error: Unresolved compilation problems:
SqlDialect cannot be resolved to a type
SqlDialect cannot be resolved
SqlDialect cannot be resolved to a type
SqlDialect cannot be resolved
The method getConformance() is undefined for the type SqlParser.Config
at com.azminds.App.main(App.java:74)
How can i fix this. OR is there any other alternatives for this problem?
Upvotes: 0
Views: 299