org.jooq.impl.TimestampDiff Maven / Gradle / Ivy
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* Licensed under the Apache License, Version 2.0 (the "License");
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* commercial database integrations.
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package org.jooq.impl;
import static org.jooq.impl.DSL.function;
import static org.jooq.impl.DSL.keyword;
import static org.jooq.impl.DSL.systemName;
import static org.jooq.impl.Keywords.K_MILLISECOND;
import static org.jooq.impl.Names.N_DATEDIFF;
import static org.jooq.impl.Names.N_DAYS;
import static org.jooq.impl.Names.N_NANO100_BETWEEN;
import static org.jooq.impl.Names.N_STRFTIME;
import static org.jooq.impl.Names.N_TIMESTAMPDIFF;
import static org.jooq.impl.Names.N_TIMESTAMP_DIFF;
import static org.jooq.impl.SQLDataType.INTEGER;
import static org.jooq.impl.SQLDataType.INTERVALDAYTOSECOND;
import static org.jooq.impl.Tools.castIfNeeded;
import java.sql.Timestamp;
import org.jooq.Context;
import org.jooq.Field;
import org.jooq.Function2;
import org.jooq.types.DayToSecond;
/**
* @author Lukas Eder
*/
final class TimestampDiff extends AbstractField implements QOM.TimestampDiff {
private final Field timestamp1;
private final Field timestamp2;
TimestampDiff(Field timestamp1, Field timestamp2) {
super(N_TIMESTAMPDIFF, INTERVALDAYTOSECOND);
this.timestamp1 = timestamp1;
this.timestamp2 = timestamp2;
}
@Override
public final void accept(Context ctx) {
switch (ctx.family()) {
case POSTGRES:
case YUGABYTEDB:
// [#4481] Parentheses are important in case this expression is
// placed in the context of other arithmetic
ctx.sql('(').visit(timestamp1).sql(" - ").visit(timestamp2).sql(')');
break;
// CUBRID's datetime operations operate on a millisecond level
case CUBRID:
ctx.visit(timestamp1.sub(timestamp2));
break;
case DERBY:
ctx.sql("1000 * {fn ").visit(N_TIMESTAMPDIFF).sql('(').visit(keyword("sql_tsi_second")).sql(", ").visit(timestamp2).sql(", ").visit(timestamp1).sql(") }");
break;
case FIREBIRD:
ctx.visit(N_DATEDIFF).sql('(').visit(K_MILLISECOND).sql(", ").visit(timestamp2).sql(", ").visit(timestamp1).sql(')');
break;
case H2:
case HSQLDB:
ctx.visit(N_DATEDIFF).sql("('ms', ").visit(timestamp2).sql(", ").visit(timestamp1).sql(')');
break;
// MySQL's datetime operations operate on a microsecond level
case MARIADB:
case MYSQL:
ctx.visit(N_TIMESTAMPDIFF).sql('(').visit(keyword("microsecond")).sql(", ").visit(timestamp2).sql(", ").visit(timestamp1).sql(") / 1000");
break;
case SQLITE:
ctx.sql('(').visit(N_STRFTIME).sql("('%s', ").visit(timestamp1).sql(") - ").visit(N_STRFTIME).sql("('%s', ").visit(timestamp2).sql(")) * 1000");
break;
default:
// Default implementation for equals() and hashCode()
ctx.visit(castIfNeeded(timestamp1.sub(timestamp2), DayToSecond.class));
break;
}
}
// -------------------------------------------------------------------------
// XXX: Query Object Model
// -------------------------------------------------------------------------
@Override
public final Field $arg1() {
return timestamp1;
}
@Override
public final Field $arg2() {
return timestamp2;
}
@Override
public final Function2, ? super Field, ? extends QOM.TimestampDiff> $constructor() {
return (t1, t2) -> new TimestampDiff<>(t1, t2);
}
}