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tasks/astrid/common-src/com/todoroo/andlib/sql/Join.java

44 lines
1.4 KiB
Java

package com.todoroo.andlib.sql;
import static com.todoroo.andlib.sql.SqlConstants.JOIN;
import static com.todoroo.andlib.sql.SqlConstants.ON;
import static com.todoroo.andlib.sql.SqlConstants.SPACE;
public class Join {
private final SqlTable joinTable;
private final JoinType joinType;
private final Criterion[] criterions;
private Join(SqlTable table, JoinType joinType, Criterion... criterions) {
joinTable = table;
this.joinType = joinType;
this.criterions = criterions;
}
public static Join inner(SqlTable expression, Criterion... criterions) {
return new Join(expression, JoinType.INNER, criterions);
}
public static Join left(SqlTable table, Criterion... criterions) {
return new Join(table, JoinType.LEFT, criterions);
}
public static Join right(SqlTable table, Criterion... criterions) {
return new Join(table, JoinType.RIGHT, criterions);
}
public static Join out(SqlTable table, Criterion... criterions) {
return new Join(table, JoinType.OUT, criterions);
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append(joinType).append(SPACE).append(JOIN).append(SPACE).append(joinTable).append(SPACE).append(ON);
for (Criterion criterion : criterions) {
sb.append(SPACE).append(criterion);
}
return sb.toString();
}
}