Examples of org.apache.jackrabbit.mk.api.MicroKernelException

org.apache.jackrabbit.mk.api.MicroKernelException
Exception thrown by methods of the {@code MicroKernel} API

    public SQLDocumentStore(String jdbcurl, String username, String password) {
        try {
            Connection connection = DriverManager.getConnection(jdbcurl, username, password);
            initialize(connection);
        } catch (Exception ex) {
            throw new MicroKernelException("initializing SQL document store", ex);
        }
    }

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    public void dispose() {
        try {
            this.connection.close();
            this.connection = null;
        } catch (SQLException ex) {
            throw new MicroKernelException(ex);
        }
    }

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            boolean checkConditions) {
        T oldDoc = readDocument(collection, update.getId());


        if (oldDoc == null) {
            if (!update.isNew() || !allowCreate) {
                throw new MicroKernelException("Document does not exist: " + update.getId());
            }
            T doc = collection.newDocument(this);
            if (checkConditions && !UpdateUtils.checkConditions(doc, update)) {
                return null;
            }
            update.increment(MODCOUNT, 1);
            UpdateUtils.applyChanges(doc, update, comparator);
            doc.seal();
            insertDocument(collection, doc);
        } else {
            T doc = applyChanges(collection, oldDoc, update, checkConditions);
            if (doc == null) {
                return null;
            }


            int retries = 5; // TODO
            boolean success = false;


            while (!success && retries > 0) {
                success = updateDocument(collection, doc, (Long) oldDoc.get(MODCOUNT));
                if (!success) {
                    // retry with a fresh document
                    retries -= 1;
                    oldDoc = readDocument(collection, update.getId());
                    doc = applyChanges(collection, oldDoc, update, checkConditions);
                    if (doc == null) {
                        return null;
                    }
                }
            }


            if (!success) {
                throw new MicroKernelException("failed update (race?)");
            }
        }


        return oldDoc;
    }

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    private RuntimeException convert(Exception e) {
        if (e instanceof RuntimeException) {
            return (RuntimeException) e;
        }
        log("// unexpected exception type: " + e.getClass().getName());
        return new MicroKernelException("Unexpected exception: " + e.toString(), e);
    }

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        String tableName = getTable(collection);
        try {
            for (String id : ids) {
                String in = dbRead(connection, tableName, id);
                if (in == null) {
                    throw new MicroKernelException(tableName + " " + id + " not found");
                }
                T doc = fromString(collection, in);
                Long oldmodcount = (Long) doc.get(MODCOUNT);
                update.increment(MODCOUNT, 1);
                UpdateUtils.applyChanges(doc, update, comparator);
                String data = asString(doc);
                Long modified = (Long) doc.get(MODIFIED);
                Long modcount = (Long) doc.get(MODCOUNT);
                dbUpdate(connection, tableName, id, modified, modcount, oldmodcount, data);
            }
            connection.commit();
        } catch (Exception ex) {
            throw new MicroKernelException(ex);
        }
    }

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    private <T extends Document> List<T> internalQuery(Collection<T> collection, String fromKey, String toKey,
            String indexedProperty, long startValue, int limit) {
        String tableName = getTable(collection);
        List<T> result = new ArrayList<T>();
        if (indexedProperty != null && !MODIFIED.equals(indexedProperty)) {
            throw new MicroKernelException("indexed property " + indexedProperty + " not supported");
        }
        try {
            List<String> dbresult = dbQuery(connection, tableName, fromKey, toKey, indexedProperty, startValue, limit);
            for (String data : dbresult) {
                T doc = fromString(collection, data);
                doc.seal();
                result.add(doc);
            }
        } catch (Exception ex) {
            throw new MicroKernelException(ex);
        }
        return result;
    }

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        String tableName = getTable(collection);
        try {
            String in = dbRead(connection, tableName, id);
            return in != null ? fromString(collection, in) : null;
        } catch (Exception ex) {
            throw new MicroKernelException(ex);
        }
    }

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        String tableName = getTable(collection);
        try {
            dbDelete(connection, tableName, id);
            connection.commit();
        } catch (Exception ex) {
            throw new MicroKernelException(ex);
        }
    }

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            Long modcount = (Long) document.get(MODCOUNT);
            boolean success = dbUpdate(connection, tableName, document.getId(), modified, modcount, oldmodcount, data);
            connection.commit();
            return success;
        } catch (SQLException ex) {
            throw new MicroKernelException(ex);
        }
    }

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            Long modified = (Long) document.get(MODIFIED);
            Long modcount = (Long) document.get(MODCOUNT);
            dbInsert(connection, tableName, document.getId(), modified, modcount, data);
            connection.commit();
        } catch (SQLException ex) {
            throw new MicroKernelException(ex);
        }
    }

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