Mercurial > hg > monetdb-java
changeset 165:8415c37c0ab4
Added clarification on the meaning of the contents of column[] which contains both possible query result columns and possible parameters.
| author | Martin van Dinther <martin.van.dinther@monetdbsolutions.com> |
|---|---|
| date | Thu, 07 Sep 2017 19:03:34 +0200 (2017-09-07) |
| parents | 7c9e386fe49a |
| children | 5c575fb21be0 |
| files | src/main/java/nl/cwi/monetdb/jdbc/MonetPreparedStatement.java |
| diffstat | 1 files changed, 6 insertions(+), 0 deletions(-) [+] |
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--- a/src/main/java/nl/cwi/monetdb/jdbc/MonetPreparedStatement.java +++ b/src/main/java/nl/cwi/monetdb/jdbc/MonetPreparedStatement.java @@ -146,6 +146,7 @@ public class MonetPreparedStatement // fill the arrays ResultSet rs = super.getResultSet(); if (rs != null) { + // System.out.println("After super.getResultSet();"); int type_colnr = rs.findColumn("type"); int digits_colnr = rs.findColumn("digits"); int scale_colnr = rs.findColumn("scale"); @@ -162,6 +163,9 @@ public class MonetPreparedStatement schema[i] = rs.getString(schema_colnr); table[i] = rs.getString(table_colnr); column[i] = rs.getString(column_colnr); + /* when column[i] != null it is a result column of the prepared query, see getColumnIdx(int), + when column[i] == null it is a parameter for the prepared statement, see getParamIdx(int). */ + // System.out.println("column " + i + " has value: " + column[i]); } rs.close(); } @@ -328,6 +332,7 @@ public class MonetPreparedStatement private int getColumnIdx(int colnr) throws SQLException { int curcol = 0; for (int i = 0; i < size; i++) { + /* when column[i] == null it is a parameter, when column[i] != null it is a result column of the prepared query */ if (column[i] == null) continue; curcol++; @@ -343,6 +348,7 @@ public class MonetPreparedStatement private int getParamIdx(int paramnr) throws SQLException { int curparam = 0; for (int i = 0; i < size; i++) { + /* when column[i] == null it is a parameter, when column[i] != null it is a result column of the prepared query */ if (column[i] != null) continue; curparam++;