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MySQLUpdateGenerator.java
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58 lines (48 loc) · 1.96 KB
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package sqlancer.mysql.gen;
import java.sql.SQLException;
import java.util.List;
import sqlancer.Randomly;
import sqlancer.common.gen.AbstractUpdateGenerator;
import sqlancer.common.query.SQLQueryAdapter;
import sqlancer.mysql.MySQLErrors;
import sqlancer.mysql.MySQLGlobalState;
import sqlancer.mysql.MySQLSchema.MySQLColumn;
import sqlancer.mysql.MySQLSchema.MySQLTable;
import sqlancer.mysql.MySQLVisitor;
public class MySQLUpdateGenerator extends AbstractUpdateGenerator<MySQLColumn> {
private final MySQLGlobalState globalState;
private MySQLExpressionGenerator gen;
public MySQLUpdateGenerator(MySQLGlobalState globalState) {
this.globalState = globalState;
}
public static SQLQueryAdapter create(MySQLGlobalState globalState) throws SQLException {
return new MySQLUpdateGenerator(globalState).generate();
}
private SQLQueryAdapter generate() throws SQLException {
MySQLTable table = globalState.getSchema().getRandomTable(t -> !t.isView());
List<MySQLColumn> columns = table.getRandomNonEmptyColumnSubset();
gen = new MySQLExpressionGenerator(globalState).setColumns(table.getColumns());
sb.append("UPDATE ");
sb.append(table.getName());
sb.append(" SET ");
updateColumns(columns);
if (Randomly.getBoolean()) {
sb.append(" WHERE ");
MySQLErrors.addExpressionErrors(errors);
sb.append(MySQLVisitor.asString(gen.generateExpression()));
}
MySQLErrors.addInsertUpdateErrors(errors);
errors.add("doesn't have this option");
return new SQLQueryAdapter(sb.toString(), errors);
}
@Override
protected void updateValue(MySQLColumn column) {
if (Randomly.getBoolean()) {
sb.append(gen.generateConstant());
} else if (Randomly.getBoolean()) {
sb.append("DEFAULT");
} else {
sb.append(MySQLVisitor.asString(gen.generateExpression()));
}
}
}