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H2UpdateGenerator.java
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48 lines (39 loc) · 1.57 KB
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package sqlancer.h2;
import java.util.List;
import sqlancer.Randomly;
import sqlancer.common.gen.AbstractUpdateGenerator;
import sqlancer.common.query.SQLQueryAdapter;
import sqlancer.h2.H2Provider.H2GlobalState;
import sqlancer.h2.H2Schema.H2Column;
import sqlancer.h2.H2Schema.H2Table;
public final class H2UpdateGenerator extends AbstractUpdateGenerator<H2Column> {
private final H2GlobalState globalState;
private H2ExpressionGenerator gen;
private H2UpdateGenerator(H2GlobalState globalState) {
this.globalState = globalState;
}
public static SQLQueryAdapter getQuery(H2GlobalState globalState) {
return new H2UpdateGenerator(globalState).generate();
}
private SQLQueryAdapter generate() {
H2Table table = globalState.getSchema().getRandomTable(t -> !t.isView());
List<H2Column> columns = table.getRandomNonEmptyColumnSubset();
gen = new H2ExpressionGenerator(globalState).setColumns(table.getColumns());
sb.append("UPDATE ");
sb.append(table.getName());
sb.append(" SET ");
updateColumns(columns);
H2Errors.addInsertErrors(errors);
H2Errors.addDeleteErrors(errors);
if (Randomly.getBoolean()) {
sb.append(" WHERE ");
sb.append(H2ToStringVisitor.asString(gen.generateExpression()));
}
H2Errors.addExpressionErrors(errors);
return new SQLQueryAdapter(sb.toString(), errors);
}
@Override
protected void updateValue(H2Column column) {
sb.append(H2ToStringVisitor.asString(gen.generateConstant()));
}
}