Examples with GraphDatabase org.neo4j.android.client.GraphDatabase used on opensource projects

Example 6 with GraphDatabase

use of org.neo4j.android.client.GraphDatabase in project neo4j-mobile-android by neo4j-contrib.

the class RelationshipPropertiesActivity method confirmDeletionOfProperty.

private void confirmDeletionOfProperty(final String key, final Object value) {
    AlertDialog dialog = new AlertDialog.Builder(this).create();
    dialog.setTitle(R.string.property_delete_title);
    Formatter formatter = new Formatter();
    formatter.format(getResources().getString(R.string.property_delete_from_relationship_question), key, value, relationshipId);
    dialog.setMessage(formatter.toString());
    dialog.setButton(getResources().getString(android.R.string.ok), new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            try {
                GraphDatabase database = dbManager.getCurrentNeo4jDatabase();
                database.beginTx();
                try {
                    ParcelableRelationship relationship = database.getRelationshipById(relationshipId);
                    relationship.removeProperty(key);
                    database.updateRelationship(relationship);
                    database.txSuccess();
                } finally {
                    database.txFinish();
                }
            } catch (Exception e) {
                Ln.e(e, "failed to delete property with key '" + key + "' and value '" + value + "' from relationship with id '" + relationshipId + "'.");
                showErrorDialog();
            }
        }
    });
    dialog.setButton2(getResources().getString(android.R.string.cancel), new DialogInterface.OnClickListener() {

        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.cancel();
        }
    });
    dialog.show();
    formatter.close();
}

Example 7 with GraphDatabase

use of org.neo4j.android.client.GraphDatabase in project neo4j-mobile-android by neo4j-contrib.

the class RelationshipActivity method updateRelationshipsList.

private void updateRelationshipsList() {
    try {
        relationshipsLayout.removeAllViews();
        GraphDatabase database = dbManager.getCurrentNeo4jDatabase();
        database.beginTx();
        try {
            ParcelableNode centerNode = database.getNodeById(centerNodeId);
            List<ParcelableRelationship> relationshipsFromCenterNode = new ArrayList<ParcelableRelationship>();
            List<ParcelableRelationship> relationshipsToCenterNode = new ArrayList<ParcelableRelationship>();
            for (ParcelableRelationship relationship : centerNode.getRelationships()) {
                if ((centerNodeId == relationship.getStartNodeId()) && (peerNodeId == relationship.getEndNodeId())) {
                    relationshipsFromCenterNode.add(relationship);
                }
                if ((centerNodeId != peerNodeId) && (peerNodeId == relationship.getStartNodeId()) && (centerNodeId == relationship.getEndNodeId())) {
                    relationshipsToCenterNode.add(relationship);
                }
            }
            Button nodeCenterButton = (Button) findViewById(R.id.nodeCenterButton);
            nodeCenterButton.setText("" + centerNodeId);
            nodeCenterButton.setOnClickListener(new View.OnClickListener() {

                @Override
                public void onClick(View v) {
                    showNodePropertyActivity(centerNodeId);
                }
            });
            Button nodePeerButton = (Button) findViewById(R.id.nodePeerButton);
            if (centerNodeId == peerNodeId) {
                nodePeerButton.setVisibility(View.INVISIBLE);
            } else {
                nodePeerButton.setText("" + peerNodeId);
                nodePeerButton.setOnClickListener(new View.OnClickListener() {

                    @Override
                    public void onClick(View v) {
                        showNodePropertyActivity(peerNodeId);
                    }
                });
            }
            for (ParcelableRelationship relationship : relationshipsFromCenterNode) {
                addRelationshipsListItem(relationship, true);
            }
            for (ParcelableRelationship relationship : relationshipsToCenterNode) {
                addRelationshipsListItem(relationship, false);
            }
        } finally {
            database.txFinish();
        }
    } catch (Exception e) {
        Ln.e(e, "database exception");
        showErrorDialog();
    }
}

Example 8 with GraphDatabase

use of org.neo4j.android.client.GraphDatabase in project neo4j-mobile-android by neo4j-contrib.

the class NodeActivity method createNode.

private void createNode(boolean createDefaultRelationship) throws RemoteException, Neo4jServiceException {
    GraphDatabase database = dbManager.getCurrentNeo4jDatabase();
    database.beginTx();
    try {
        ParcelableNode node = new ParcelableNode();
        long nodeId = database.createNode(node);
        Ln.i("created node '" + node + "' with id '" + nodeId + "'");
        if (createDefaultRelationship) {
            ParcelableRelationship relationship = new ParcelableRelationship();
            relationship.setStartNodeId(centerNodeId);
            relationship.setEndNodeId(nodeId);
            relationship.setName(defaultRelationshipName);
            long relationshipId = database.createRelationship(relationship);
            Ln.i("created relationship '" + relationship + "' with id '" + relationshipId + "'");
        }
        database.txSuccess();
    } finally {
        database.txFinish();
    }
}

Example 9 with GraphDatabase

use of org.neo4j.android.client.GraphDatabase in project neo4j-mobile-android by neo4j-contrib.

the class RelationshipActivity method createRelationship.

private void createRelationship(String name, long endNodeId) throws RemoteException, Neo4jServiceException {
    GraphDatabase database = dbManager.getCurrentNeo4jDatabase();
    database.beginTx();
    try {
        ParcelableRelationship relationship = new ParcelableRelationship();
        relationship.setStartNodeId(centerNodeId);
        relationship.setEndNodeId(endNodeId);
        relationship.setName(name);
        long relationshipId = database.createRelationship(relationship);
        database.txSuccess();
        Ln.i("created relationship '" + relationship + "' with id '" + relationshipId + "'");
    } finally {
        database.txFinish();
    }
}

Example 10 with GraphDatabase

use of org.neo4j.android.client.GraphDatabase in project neo4j-mobile-android by neo4j-contrib.

the class RelationshipActivity method getAllNodeIds.

private List<Long> getAllNodeIds() throws RemoteException, Neo4jServiceException {
    GraphDatabase database = dbManager.getCurrentNeo4jDatabase();
    database.beginTx();
    try {
        NodeIterator iterator = database.getAllNodes();
        List<Long> nodeIds = new ArrayList<Long>();
        while (iterator.hasNext()) {
            ParcelableNode node = iterator.next();
            nodeIds.add(node.getId());
        }
        return nodeIds;
    } finally {
        database.txFinish();
    }
}