Reputation: 233
I am having trouble getting data from a database I know exists and I know the format of.
In the code snippet below the "if conn != null" is just a test to verify the database name, table name, etc are all correct, and they DO verify.
The last line below is what generates the exception
public static HashMap<Integer, String> getNetworkMapFromRemote(DSLContext dslRemote, Connection conn, Logger logger) {
HashMap<Integer,String> remoteMap = new HashMap<Integer, String>();
// conn is only used for test purposes
if (conn != null) {
// test to be sure database is ok
try
{
ResultSet rs = conn.createStatement().executeQuery("SELECT networkid, name FROM network");
while (rs.next()) {
System.out.println("TEST: nwid " + rs.getString(1) + " name " + rs.getString(2));
}
rs.close();
}
catch ( SQLException se )
{
logger.trace("getNetworksForDevices SqlException: " + se.toString());
}
}
// ----------- JOOQ problem section ------------------------
Network nR = Network.NETWORK.as("network");
// THE FOLLOWING LINE GENERATES THE UNKNOWN TABLE
Result<Record2<Integer, String>> result = dslRemote.select( nR.NETWORKID, nR.NAME ).fetch();
This is the output
TEST: nwid 1 name Network 1
org.jooq.exception.DataAccessException: SQL [select `network`.`NetworkId`, `network`.`Name` from dual]; Unknown table 'network' in field list
at org.jooq.impl.Utils.translate(Utils.java:1288)
at org.jooq.impl.DefaultExecuteContext.sqlException(DefaultExecuteContext.java:495)
at org.jooq.impl.AbstractQuery.execute(AbstractQuery.java:327)
at org.jooq.impl.AbstractResultQuery.fetch(AbstractResultQuery.java:330)
at org.jooq.impl.SelectImpl.fetch(SelectImpl.java:2256)
at com.nvi.kpiserver.remote.KpiCollectorUtil.getNetworkMapFromRemote(KpiCollectorUtil.java:328)
at com.nvi.kpiserver.remote.KpiCollectorUtilTest.testUpdateKpiNetworksForRemoteIntravue(KpiCollectorUtilTest.java:61)
.................
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown table 'network' in field list
.................
For the sake of completness here is part of the JOOQ generated class file for Network
package com.wbcnvi.intravue.generated.tables;
@javax.annotation.Generated(value = { "http://www.jooq.org", "3.3.1" },
comments = "This class is generated by jOOQ")
@java.lang.SuppressWarnings({ "all", "unchecked", "rawtypes" })
public class Network extends org.jooq.impl.TableImpl<com.wbcnvi.intravue.generated.tables.records.NetworkRecord> {
private static final long serialVersionUID = 1729023198;
public static final com.wbcnvi.intravue.generated.tables.Network NETWORK = new com.wbcnvi.intravue.generated.tables.Network();
@Override
public java.lang.Class<com.wbcnvi.intravue.generated.tables.records.NetworkRecord> getRecordType() {
return com.wbcnvi.intravue.generated.tables.records.NetworkRecord.class;
}
public final org.jooq.TableField<com.wbcnvi.intravue.generated.tables.records.NetworkRecord, java.lang.Integer> NWID = createField("NwId", org.jooq.impl.SQLDataType.INTEGER.nullable(false), this, "");
public final org.jooq.TableField<com.wbcnvi.intravue.generated.tables.records.NetworkRecord, java.lang.Integer> NETWORKID = createField("NetworkId", org.jooq.impl.SQLDataType.INTEGER.nullable(false).defaulted(true), this, "");
public final org.jooq.TableField<com.wbcnvi.intravue.generated.tables.records.NetworkRecord, java.lang.String> NAME = createField("Name", org.jooq.impl.SQLDataType.CHAR.length(40).nullable(false).defaulted(true), this, "");
public final org.jooq.TableField<com.wbcnvi.intravue.generated.tables.records.NetworkRecord, java.lang.Integer> USECOUNT = createField("UseCount", org.jooq.impl.SQLDataType.INTEGER.nullable(false).defaulted(true), this, "");
public final org.jooq.TableField<com.wbcnvi.intravue.generated.tables.records.NetworkRecord, java.lang.Integer> NETGROUP = createField("NetGroup", org.jooq.impl.SQLDataType.INTEGER.nullable(false).defaulted(true), this, "");
public final org.jooq.TableField<com.wbcnvi.intravue.generated.tables.records.NetworkRecord, java.lang.String> AGENT = createField("Agent", org.jooq.impl.SQLDataType.CHAR.length(16), this, "");
public Network() {
this("network", null);
}
public Network(java.lang.String alias) {
this(alias, com.wbcnvi.intravue.generated.tables.Network.NETWORK);
}
..........
Based on the "unknown table" exception I thought there was a problem connected to the wrong database or wrong server, but the console output is correct for a JDBC query.
Any thoughts are appreciated, perhaps something else can be the root cause or the DSLContext is not valid (but I would think that would generate a different exception).
Upvotes: 2
Views: 1038
Reputation: 233
The answer ends up being simple, I did not include the .from() method
Result<Record2<Integer, String>> result = dslRemote.select( nR.NETWORKID, nR.NAME )
.from(nR)
.fetch();
That is why the table was unknown, I never put the from method in.
Upvotes: 5