@Override
public boolean equals(Object o) {
if (this == o) {
return true;
}
if (o == null || AssociationKey.class != o.getClass()) {
return false;
}
AssociationKey that = (AssociationKey) o;
// order of comparison matters on performance:
if (!metadata.getTable().equals(that.metadata.getTable())) {
return false;
}
// Probably incorrect - comparing Object[] arrays with Arrays.equals
if (!Arrays.equals(columnValues, that.columnValues)) {
return false;
}
if (!Arrays.equals(metadata.getColumnNames(), that.metadata.getColumnNames())) {
return false;
}
return true;
}
public AssociationKey(
AssociationKeyMetadata metadata, Object[] columnValues, EntityKey entityKey) {
this.metadata = metadata;
if (metadata.getColumnNames().length != columnValues.length) {
throw new AssertionFailure("Column names do not match column values");
}
this.columnValues = columnValues;
this.entityKey = entityKey;
this.hashCode = metadata.hashCode() * 31 + Arrays.hashCode(columnValues);
}
@Override
public String toString() {
final StringBuilder sb = new StringBuilder();
sb.append("AssociationKey(");
sb.append(getTable());
sb.append(") [");
int i = 0;
for (String column : metadata.getColumnNames()) {
sb.append(column).append("=").append(columnValues[i]);
i++;
if (i < metadata.getColumnNames().length) {
sb.append(", ");
}
}
sb.append("]");
return sb.toString();
}
/**
* The columns identifying the association.
*
* <p>For example, in a many to many association, the row key will look like:
*
* <pre>
* RowKey{table='AccountOwner_BankAccount', columnNames=[owners_id, bankAccounts_id], columnValues=[...]},
* </pre>
*
* the association key will be something like:
*
* <pre>
* AssociationKey{table='AccountOwner_BankAccount', columnNames=[owners_id], columnValues=[...]},
* </pre>
*/
public String[] getColumnNames() {
return metadata.getColumnNames();
}
/** Returns the table name of this key. */
public String getTable() {
return metadata.getTable();
}
