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doebele pushed a commit to branch master
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The following commit(s) were added to refs/heads/master by this push:
new 55b16c6 EMPIREDB-282 Added key generation function on DBTable for
convenience
55b16c6 is described below
commit 55b16c652aae2e6bd614dddb1eefadd2b31ccb5e
Author: Rainer Döbele <[email protected]>
AuthorDate: Wed Sep 11 16:53:05 2019 +0200
EMPIREDB-282
Added key generation function on DBTable for convenience
---
.../src/main/java/org/apache/empire/db/DBIndex.java | 10 ++++++++++
.../src/main/java/org/apache/empire/db/DBRecord.java | 7 +++----
.../src/main/java/org/apache/empire/db/DBTable.java | 16 ++++++++++++++++
3 files changed, 29 insertions(+), 4 deletions(-)
diff --git a/empire-db/src/main/java/org/apache/empire/db/DBIndex.java
b/empire-db/src/main/java/org/apache/empire/db/DBIndex.java
index de8b910..e1beb1f 100644
--- a/empire-db/src/main/java/org/apache/empire/db/DBIndex.java
+++ b/empire-db/src/main/java/org/apache/empire/db/DBIndex.java
@@ -115,6 +115,16 @@ public class DBIndex extends DBObject
}
/**
+ * Returns the number of columns belonging to this index.
+ *
+ * @return the number of columns belonging to this index
+ */
+ public int getColumnCount()
+ {
+ return columns.length;
+ }
+
+ /**
* checks whether the columns of this index match the supplied columns
* @param columns
* @return true if columns match or false otherwise
diff --git a/empire-db/src/main/java/org/apache/empire/db/DBRecord.java
b/empire-db/src/main/java/org/apache/empire/db/DBRecord.java
index c499c60..8a1f1cc 100644
--- a/empire-db/src/main/java/org/apache/empire/db/DBRecord.java
+++ b/empire-db/src/main/java/org/apache/empire/db/DBRecord.java
@@ -70,7 +70,7 @@ public class DBRecord extends DBRecordData implements Record,
Cloneable
return this.ordinal()>=other.ordinal();
}
}
-
+
protected static final Logger log =
LoggerFactory.getLogger(DBRecord.class);
// This is the record data
@@ -793,7 +793,6 @@ public class DBRecord extends DBRecordData implements
Record, Cloneable
* @param keyValues a Object array, the primary key(s)
* @param insert if true change the state of this object to REC_NEW
*/
-
public void init(DBRowSet table, Object[] keyValues, boolean insert)
{ // Init with keys
if (table!=null)
@@ -842,12 +841,12 @@ public class DBRecord extends DBRecordData implements
Record, Cloneable
* @param keys an array of the primary key values
* @param conn a valid connection to the database.
*/
- public void read(DBRowSet table, Object[] keys, Connection conn)
+ public void read(DBRowSet table, Object[] key, Connection conn)
{
if (table==null)
throw new InvalidArgumentException("table", table);
// read
- table.readRecord(this, keys, conn);
+ table.readRecord(this, key, conn);
}
/**
diff --git a/empire-db/src/main/java/org/apache/empire/db/DBTable.java
b/empire-db/src/main/java/org/apache/empire/db/DBTable.java
index 45f5962..a0fa3a3 100644
--- a/empire-db/src/main/java/org/apache/empire/db/DBTable.java
+++ b/empire-db/src/main/java/org/apache/empire/db/DBTable.java
@@ -634,6 +634,22 @@ public class DBTable extends DBRowSet implements Cloneable
{
this.cascadeDeleteAction = cascadeDeleteAction;
}
+
+ /**
+ * Creates a record key from a list of key values.
+ * The supplied values must be in the correct order.
+ * @param keyValues
+ * @return the record key
+ */
+ public Object[] key(Object... keyValues)
+ { // Check size
+ if (keyValues==null || keyValues.length==0)
+ throw new InvalidArgumentException("keyValues", keyValues);
+ if (this.primaryKey!=null &&
keyValues.length!=this.primaryKey.getColumnCount())
+ throw new InvalidArgumentException("keyValues:length",
keyValues.length);
+ // Return the key
+ return keyValues;
+ }
/**
* Creates a delete SQL-Command by using the DBCommand getDelete method
