net.sf.jsqlparser.statement.select.Join Java Examples

The following examples show how to use net.sf.jsqlparser.statement.select.Join. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: CTEToNestedQueryConverter.java    From quetzal with Eclipse Public License 2.0 6 votes vote down vote up 
protected int getNumberNonPlaceHolderFromItem(PlainSelect plainSelect) {
	int ret = 0;
	if (useExplicitJoinSyntax) {
		for (Join join: plainSelect.getJoins()) {
			if (join.getRightItem()!=null) {
				if ( (join.getRightItem() instanceof Table)) {
					String tableName = ((Table) join.getRightItem()).getFullyQualifiedName();
					if (!placeHolderTables.contains(tableName)) {
						ret++;
					}
				} else {
					ret++;
				}
			}
		}
	}
	return ret;
}
Example #2
Source File: SqlBuilder.java    From das with Apache License 2.0 4 votes vote down vote up 
private static String plainSelectToStringAppendWithNoLock(PlainSelect plain) {
    StringBuilder sql = new StringBuilder("SELECT ");
    if (plain.getDistinct() != null)
        sql.append(plain.getDistinct()).append(" ");

    if (plain.getTop() != null)
        sql.append(plain.getTop()).append(" ");

    sql.append(PlainSelect.getStringList(plain.getSelectItems()));
    if (plain.getFromItem() != null) {
        sql.append(" FROM ").append(plain.getFromItem()).append(" WITH (NOLOCK) ");
        if (plain.getJoins() != null) {
            Iterator<Join> it = plain.getJoins().iterator();
            while (it.hasNext()) {
                Join join = it.next();
                if (join.isSimple()) {
                    sql.append(", ").append(join).append(" WITH (NOLOCK) ");
                } else {
                    String temp = join.toString().replace(join.getRightItem().toString(),
                            join.getRightItem().toString() + " WITH (NOLOCK) ");
                    sql.append(" ").append(temp);
                }
            }
        }

        if (plain.getWhere() != null)
            sql.append(" WHERE ").append(plain.getWhere());

        if (plain.getOracleHierarchical() != null)
            sql.append(plain.getOracleHierarchical().toString());

        sql.append(PlainSelect.getFormatedList(plain.getGroupByColumnReferences(), "GROUP BY"));
        if (plain.getHaving() != null)
            sql.append(" HAVING ").append(plain.getHaving());

        sql.append(PlainSelect.orderByToString(plain.isOracleSiblings(), plain.getOrderByElements()));
        if (plain.getLimit() != null)
            sql.append(plain.getLimit());

    }
    return sql.toString();
}
Example #3
Source File: SelectVisitorImpl.java    From DataPermissionHelper with Apache License 2.0 4 votes vote down vote up 
@Override
public void visit(PlainSelect plainSelect) {

    // 访问 select
    if (plainSelect.getSelectItems() != null) {
        for (SelectItem item : plainSelect.getSelectItems()) {
            item.accept(new SelectItemVisitorImpl());
        }
    }

    // 访问from
    FromItem fromItem = plainSelect.getFromItem();
    FromItemVisitorImpl fromItemVisitorImpl = new FromItemVisitorImpl();
    fromItem.accept(fromItemVisitorImpl);

    if (fromItemVisitorImpl.getSubSelect() != null) {
        plainSelect.setFromItem(fromItemVisitorImpl.getSubSelect());
        if (!DPHelper.getChangeTable()) {
            DPHelper.setChangeTable(true);
        }
    }

    // 访问where
    if (plainSelect.getWhere() != null) {
        plainSelect.getWhere().accept(new ExpressionVisitorImpl());
    }

    // 访问join
    if (plainSelect.getJoins() != null) {
        for (Join join : plainSelect.getJoins()) {
            FromItemVisitorImpl fromItemVisitorImplTemp = new FromItemVisitorImpl();
            join.getRightItem().accept(fromItemVisitorImplTemp);
            if (fromItemVisitorImplTemp.getSubSelect() != null) {
                join.setRightItem(fromItemVisitorImplTemp.getSubSelect());
                if (!DPHelper.getChangeTable()) {
                    DPHelper.setChangeTable(true);
                }
            }
        }
    }

    // 访问 order by
    if (plainSelect.getOrderByElements() != null) {
        for (OrderByElement orderByElement : plainSelect
                .getOrderByElements()) {
            orderByElement.getExpression().accept(
                    new ExpressionVisitorImpl());
        }
    }

    // 访问group by having
    if (plainSelect.getHaving() != null) {
        plainSelect.getHaving().accept(new ExpressionVisitorImpl());
    }

}
Example #4
Source File: JoinProcessor.java    From sql-to-mongo-db-query-converter with Apache License 2.0 4 votes vote down vote up 
public static List<Document> toPipelineSteps(QueryConverter queryConverter, FromHolder tholder, List<Join> ljoins, Expression whereExpression) throws ParseException, net.sf.jsqlparser.parser.ParseException {
	List<Document> ldoc = new LinkedList<Document>();
	MutableBoolean haveOrExpression = new MutableBoolean();
	for(Join j : ljoins) {
		if(j.isInner() || j.isLeft()) {
			
			if(j.getRightItem() instanceof Table || j.getRightItem() instanceof SubSelect) {
				ExpressionHolder whereExpHolder;
				String joinTableAlias = j.getRightItem().getAlias().getName();
				String joinTableName = tholder.getSQLHolder(j.getRightItem()).getBaseTableName();
				
				whereExpHolder = new ExpressionHolder(null);
				
				if(whereExpression != null) {
					haveOrExpression.setValue(false);
					whereExpression.accept(new WhereVisitorMatchAndLookupPipelineMatchBuilder(joinTableAlias, whereExpHolder, haveOrExpression));
					if(!haveOrExpression.booleanValue() && whereExpHolder.getExpression() != null) {
						whereExpHolder.getExpression().accept(new ExpVisitorEraseAliasTableBaseBuilder(joinTableAlias));
					}
					else {
						whereExpHolder.setExpression(null);
					}
				}
				
				List<Document> subqueryDocs = new LinkedList<>();
				
				if(j.getRightItem() instanceof SubSelect) {
					subqueryDocs = queryConverter.fromSQLCommandInfoHolderToAggregateSteps((SQLCommandInfoHolder)tholder.getSQLHolder(j.getRightItem()));
				}
				
				ldoc.add(generateLookupStep(tholder,joinTableName,joinTableAlias,j.getOnExpression(),whereExpHolder.getExpression(),subqueryDocs));
				ldoc.add(generateUnwindStep(tholder,joinTableAlias,j.isLeft()));
			}
			else {
				throw new ParseException("From join not supported");
			}
		}
		else {
			throw new ParseException("Only inner join and left supported");
		}
		
	}
	if(haveOrExpression.booleanValue()) {//if there is some "or" we use this step for support this logic and no other match steps
		ldoc.add(generateMatchAfterJoin(tholder,whereExpression));
	}
	return ldoc;
}
Example #5
Source File: SqlBuilder.java    From dal with Apache License 2.0 4 votes vote down vote up 
private static String plainSelectToStringAppendWithNoLock(PlainSelect plain) {
    StringBuilder sql = new StringBuilder("SELECT ");
    if (plain.getDistinct() != null)
        sql.append(plain.getDistinct()).append(" ");

    if (plain.getTop() != null)
        sql.append(plain.getTop()).append(" ");

    sql.append(PlainSelect.getStringList(plain.getSelectItems()));
    if (plain.getFromItem() != null) {
        sql.append(" FROM ").append(plain.getFromItem()).append(" WITH (NOLOCK) ");
        if (plain.getJoins() != null) {
            Iterator<Join> it = plain.getJoins().iterator();
            while (it.hasNext()) {
                Join join = it.next();
                if (join.isSimple()) {
                    sql.append(", ").append(join).append(" WITH (NOLOCK) ");
                } else {
                    String temp = join.toString().replace(join.getRightItem().toString(),
                            join.getRightItem().toString() + " WITH (NOLOCK) ");
                    sql.append(" ").append(temp);
                }
            }
        }

        if (plain.getWhere() != null)
            sql.append(" WHERE ").append(plain.getWhere());

        if (plain.getOracleHierarchical() != null)
            sql.append(plain.getOracleHierarchical().toString());

        sql.append(PlainSelect.getFormatedList(plain.getGroupByColumnReferences(), "GROUP BY"));
        if (plain.getHaving() != null)
            sql.append(" HAVING ").append(plain.getHaving());

        sql.append(PlainSelect.orderByToString(plain.isOracleSiblings(), plain.getOrderByElements()));
        if (plain.getLimit() != null)
            sql.append(plain.getLimit());

    }
    return sql.toString();
}