uk.ac.bbk.dcs.automed.hdmstore
Class HdmStore

java.lang.Object
  uk.ac.bbk.dcs.automed.hdmstore.HdmStore

public class HdmStore
extends java.lang.Object

A HdmStore allows data to be stored and queried in an HDM repository which is implemented in a Postgres databas).

Author:

Dean Williams (dean@dcs.bbk.ac.uk)

Field Summary

private boolean	addMissingNodes
private static java.lang.String	BOOLEAN
private static java.lang.String	checkEdgeExistsSQL1
private static java.lang.String	checkEdgeExistsSQL2
private static java.lang.String	checkEdgeExistsSQL3
private static java.lang.String	checkExistsSQL1
private static java.lang.String	checkExistsSQL2
private static java.lang.String	checkExistsSQL3
private static java.lang.String	checkHdmExistsSQL1
private static java.lang.String	checkHdmExistsSQL2
private static java.lang.String	checkIfExistsAsASpanSQL1
private static java.lang.String	checkIfExistsAsASpanSQL2
private static java.lang.String	checkIfExistsAsASpanSQL3
private java.sql.Connection	conn
private boolean	connected
private static java.lang.String[]	createTableSQL
Debug	debug
private static java.lang.String	defaultSchema
private static java.lang.String	deleteEdgeSpanSQL1
private static java.lang.String	deleteEdgeSpanSQL2
private static java.lang.String	deleteEdgeSQL1
private static java.lang.String	deleteEdgeSQL2
private static java.lang.String	deleteNodeSQL1
private static java.lang.String	deleteNodeSQL2
private static java.lang.String	deleteNodeSQL3
private static java.lang.String[]	dropSequenceSQL
private static java.lang.String	dropTableSQL
private java.util.ArrayList	edgeNames
static char	edgeSpan
private java.util.ArrayList	edgeTypes
private static java.lang.String	getAccessMethodSQL1
private static java.lang.String	getAccessMethodSQL2
private static java.lang.String	getEdgeSpanSQL1
private static java.lang.String	getEdgeSpanSQL2
private static java.lang.String	getEdgesSQL1
private static java.lang.String	getEdgesSQL2
private static java.lang.String	getHdmForSchemaSQL1
private static java.lang.String	getMaxNumberSQL1
private static java.lang.String	getMaxNumberSQL2
private static java.lang.String	getMaxNumberSQL3
private static java.lang.String	getNodeByIdSQL1
private static java.lang.String	getNodeByIdSQL2
private static java.lang.String	getNodeSpanSQL1
private static java.lang.String	getNodeSpanSQL2
private static java.lang.String	getSpansSQL1
private static java.lang.String	getSpansSQL2
private static java.lang.String	getSpansSQL3
private static java.lang.String[]	hdmStoreTables
private int	hid
private static java.lang.String	insertDatatypeSQL1
private static java.lang.String	insertDatatypeSQL2
private static java.lang.String	insertDatatypeSQL3
private static java.lang.String	insertDatatypeSQL4
private static java.lang.String	insertEdgeSQL1
private static java.lang.String	insertEdgeSQL2
private static java.lang.String	insertEdgeSQL3
private static java.lang.String	insertEdgeSQL4
private static java.lang.String	insertEdgeSQL5
private static java.lang.String	insertEdgeSQL6
private static java.lang.String	insertNodeSQL1
private static java.lang.String	insertNodeSQL2
private static java.lang.String	insertNodeSQL3
private static java.lang.String	insertNodeSQL4
private static java.lang.String	insertSpanSQL1
private static java.lang.String	insertSpanSQL2
private static java.lang.String	insertSpanSQL3
private static java.lang.String	insertSpanSQL4
private static java.lang.String	insertSpanSQL5
private static java.lang.String	insertSpanSQL6
private static java.lang.String	insertStoreSQL1
private static java.lang.String	insertStoreSQL2
private static java.lang.String	insertStoreSQL3
private static java.lang.String	insertStoreSQL4
private static java.lang.String	INTEGER
private static java.lang.String	isNameUniqueSQL1
private static java.lang.String	isNameUniqueSQL2
static char	nodeSpan
private java.util.ArrayList	nodeTypes
private static java.lang.String	noSeq
private static java.lang.String	queryNodesSQL1
private static java.lang.String	queryNodesSQL2
private java.lang.String	schemaName
private static java.lang.String	STRING
private static java.lang.String	updateDatatypeSQL1
private static java.lang.String	updateDatatypeSQL2
private static java.lang.String	updateDatatypeSQL3
private static java.lang.String	updateDatatypeSQL4

Constructor Summary

HdmStore()
Default constructor assumes only error messages should be displayed (not debugs)

HdmStore(Debug pDebug)
Constructor is passed debug class to send debug & error messages to

Method Summary

boolean	addEdge(Edge edge) Takes an Edge struture and stores this in the database.
boolean	addNode(java.lang.String nodeType, java.lang.String nodeValue) Takes a node type and a value and adds to the database
private boolean	checkIfExistsAsASpan(int id, char edgeOrNode) Does the specified edge appear as a span in another edge?
private boolean	checkTablesAreSetUp(java.util.ArrayList tablesInDB) Checks that the tables listed in the ArrayList passed exist in the Postgres database
boolean	connect() If connecting to the HDM store without a schema being passed assume same data source as for the MDR
boolean	connect(java.lang.String schemaName) Connect to the database using the access method for the named schema.
boolean	connect(java.lang.String schemaName, java.lang.String passWord) Connect to the database using the access method for the named schema using the access method in the repository for the schema and the password supplied.
boolean	createDBtables()
boolean	createDBtables(java.lang.String schemaName) Check to see if the repository tables are in place on the HDM store data source.
boolean	createHdmStore(java.lang.String schemaName, java.lang.String hdmStoreName) Create a logical HDM store for the given schema.
boolean	deleteEdge(java.lang.String edgeType, java.lang.String edgeValue) Check the node type is valid & and instance of the node with this value exists.
boolean	deleteNode(java.lang.String nodeType, java.lang.String nodeValue) Check the node type is valid & and instance of the node with this value exists.
void	dropSequence() Older versions of Postgres do not automatically drop sequences created for primary keys etc when the table is dropped - this loops through dropping the sequences explicitly.
private void	dropTables(java.util.ArrayList tablesInDB) Drop all the tables named in the ArrayList passed
boolean	edgeExists(Span span) Test to see if an edge exists has been passed a Span structure - split this out into type and and value and return the result.
boolean	edgeExists(java.lang.String edgeType, java.lang.String edgeValues) Does and edge with this type and value exist in the HDM store?
boolean	edgeInstanceExists(java.lang.String type, java.lang.String values) Check to see if an instance of this edge exists in the HDM store
private int	edgeInstanceId(java.lang.String type, java.lang.String values) Given an edge type (e.g.
private java.lang.String	edgeName(java.lang.String type) Edge types such as <> include an edge name (which may be '_' for blank).
boolean	edgeNameIsUnique(java.lang.String edgeName) Edge names dont have to be unique - the combination of edge name and types is unique i.e.
boolean	edgeTypeExists(java.lang.String edgeType) Given an edge type e.g.
java.lang.String	edgeTypeForName(java.lang.String edgeName) Assuming edge name is unique (which need to be checked before calling) return its edge type e.g.
java.util.LinkedList	getEdgeInstances(java.lang.String edgeType) Return all the instances of the passed edge type as a LinkedList of Span elements, each Span representing an instance of an edge.
java.util.LinkedList	getNodeInstances(java.lang.String nodeType) Given a node type return all the instances in the HDM store as a LinkedList with elements of type Span, each element representing an instance
java.util.LinkedList	getSpans(int hid, int eid) For the edge specified return a LinkedList with each element of type Span representing a span in that edge.
boolean	hdmStoreExists(java.lang.String hdmStoreName) Is there an HDM store with the passed name in the repository?
int	hid(java.lang.String hdmStoreName) Given an HDM store name return its row id number (or -1 if it does not exist)
void	listNodes() Want to display all the nodes so pass just a wildcard as a the pattern
void	listNodes(java.lang.String nodeType) List the instance nodes of the passed nodeType (or wildcard)
private int	maxIdNumber(java.lang.String columnName, java.lang.String tableName) For the specified table / column, what is the maximum id number?
boolean	nodeExists(Span span) For the node instance specifed in the Span data structure check if it exists in the HDM store
boolean	nodeExists(java.lang.String nodeType, java.lang.String nodeValue) For the node instance specifed by node type & value, check if it exists in the HDM store
private boolean	nodeInstancesExist(java.lang.String nodeType) Check whether any instances of this node type are currently stored in the HDM store
boolean	nodeTypeExists(java.lang.String nodeType) Check whether any instances of this node type are currently stored in the HDM store
int	numberOfRowsInResultSet(java.sql.ResultSet rset) Given a result set - how many rows are in it?
boolean	okToAddEdge(Edge edge) Given an Edge is it OK to add the edge e.g.
private Span	populateDatabaseId(Span span) Given a Span which represents either a node or an edge, in terms of its type & value populate the fields in the span structure that identify the rows in the database used to store this span.
private Span	populateEdgeValue(Span span) This Span represents an edge - get the edge details from the database and update the span.
private Span	populateNodeValue(Span span) This Span represents a node - get the node details from the database and update the span.
private java.util.LinkedList	retrieveNodes(java.lang.String nodeType, boolean print) For the passed node type (may be a wildcard) get the node instances and return them as a LinkedList of EdgeElement.
java.lang.String	schemaName(java.lang.String hdmStoreName) Given an HDM store name return the name of the schema it stores data for
void	setAddMissingNodes(boolean pAddMissingNodes) If you try to add an instance of an edge then all the nodes and edges that are spans of the new edge must already exist in the database.
boolean	setDatatype(java.lang.String nodeType, java.lang.String datatype) The meta data for an HDM store is contained in the associated AutoMed schema except for the data type of the nodes in the schema which are set with this method (initially they default to String)
private void	setupStoreTables(java.util.ArrayList tablesInDB) Passed a set of tables that exist in the database create any missing ones
private java.util.ArrayList	tablesInDB() Get a list of tables that exist in the database
boolean	use(java.lang.String hdmStoreName) Use the named HDM store - subsequent calls to this HdmStore will use this store as default

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

BOOLEAN

private static final java.lang.String BOOLEAN

See Also:

Constant Field Values

checkEdgeExistsSQL1

private static final java.lang.String checkEdgeExistsSQL1

See Also:

Constant Field Values

checkEdgeExistsSQL2

private static final java.lang.String checkEdgeExistsSQL2

See Also:

Constant Field Values

checkEdgeExistsSQL3

private static final java.lang.String checkEdgeExistsSQL3

See Also:

Constant Field Values

checkIfExistsAsASpanSQL1

private static final java.lang.String checkIfExistsAsASpanSQL1

See Also:

Constant Field Values

checkIfExistsAsASpanSQL2

private static final java.lang.String checkIfExistsAsASpanSQL2

See Also:

Constant Field Values

checkIfExistsAsASpanSQL3

private static final java.lang.String checkIfExistsAsASpanSQL3

See Also:

Constant Field Values

checkExistsSQL1

private static final java.lang.String checkExistsSQL1

See Also:

Constant Field Values

checkExistsSQL2

private static final java.lang.String checkExistsSQL2

See Also:

Constant Field Values

checkExistsSQL3

private static final java.lang.String checkExistsSQL3

See Also:

Constant Field Values

checkHdmExistsSQL1

private static final java.lang.String checkHdmExistsSQL1

See Also:

Constant Field Values

checkHdmExistsSQL2

private static final java.lang.String checkHdmExistsSQL2

See Also:

Constant Field Values

createTableSQL

private static final java.lang.String[] createTableSQL

defaultSchema

private static final java.lang.String defaultSchema

See Also:

Constant Field Values

deleteNodeSQL1

private static final java.lang.String deleteNodeSQL1

See Also:

Constant Field Values

deleteNodeSQL2

private static final java.lang.String deleteNodeSQL2

See Also:

Constant Field Values

deleteNodeSQL3

private static final java.lang.String deleteNodeSQL3

See Also:

Constant Field Values

deleteEdgeSQL1

private static final java.lang.String deleteEdgeSQL1

See Also:

Constant Field Values

deleteEdgeSQL2

private static final java.lang.String deleteEdgeSQL2

See Also:

Constant Field Values

deleteEdgeSpanSQL1

private static final java.lang.String deleteEdgeSpanSQL1

See Also:

Constant Field Values

deleteEdgeSpanSQL2

private static final java.lang.String deleteEdgeSpanSQL2

See Also:

Constant Field Values

dropSequenceSQL

private static final java.lang.String[] dropSequenceSQL

dropTableSQL

private static final java.lang.String dropTableSQL

See Also:

Constant Field Values

getAccessMethodSQL1

private static final java.lang.String getAccessMethodSQL1

See Also:

Constant Field Values

getAccessMethodSQL2

private static final java.lang.String getAccessMethodSQL2

See Also:

Constant Field Values

getEdgeSpanSQL1

private static final java.lang.String getEdgeSpanSQL1

See Also:

Constant Field Values

getEdgeSpanSQL2

private static final java.lang.String getEdgeSpanSQL2

See Also:

Constant Field Values

getEdgesSQL1

private static final java.lang.String getEdgesSQL1

See Also:

Constant Field Values

getEdgesSQL2

private static final java.lang.String getEdgesSQL2

See Also:

Constant Field Values

getHdmForSchemaSQL1

private static final java.lang.String getHdmForSchemaSQL1

See Also:

Constant Field Values

getMaxNumberSQL1

private static final java.lang.String getMaxNumberSQL1

See Also:

Constant Field Values

getMaxNumberSQL2

private static final java.lang.String getMaxNumberSQL2

See Also:

Constant Field Values

getMaxNumberSQL3

private static final java.lang.String getMaxNumberSQL3

See Also:

Constant Field Values

getNodeByIdSQL1

private static final java.lang.String getNodeByIdSQL1

See Also:

Constant Field Values

getNodeByIdSQL2

private static final java.lang.String getNodeByIdSQL2

See Also:

Constant Field Values

getNodeSpanSQL1

private static final java.lang.String getNodeSpanSQL1

See Also:

Constant Field Values

getNodeSpanSQL2

private static final java.lang.String getNodeSpanSQL2

See Also:

Constant Field Values

getSpansSQL1

private static final java.lang.String getSpansSQL1

See Also:

Constant Field Values

getSpansSQL2

private static final java.lang.String getSpansSQL2

See Also:

Constant Field Values

getSpansSQL3

private static final java.lang.String getSpansSQL3

See Also:

Constant Field Values

hdmStoreTables

private static final java.lang.String[] hdmStoreTables

insertDatatypeSQL1

private static final java.lang.String insertDatatypeSQL1

See Also:

Constant Field Values

insertDatatypeSQL2

private static final java.lang.String insertDatatypeSQL2

See Also:

Constant Field Values

insertDatatypeSQL3

private static final java.lang.String insertDatatypeSQL3

See Also:

Constant Field Values

insertDatatypeSQL4

private static final java.lang.String insertDatatypeSQL4

See Also:

Constant Field Values

insertEdgeSQL1

private static final java.lang.String insertEdgeSQL1

See Also:

Constant Field Values

insertEdgeSQL2

private static final java.lang.String insertEdgeSQL2

See Also:

Constant Field Values

insertEdgeSQL3

private static final java.lang.String insertEdgeSQL3

See Also:

Constant Field Values

insertEdgeSQL4

private static final java.lang.String insertEdgeSQL4

See Also:

Constant Field Values

insertEdgeSQL5

private static final java.lang.String insertEdgeSQL5

See Also:

Constant Field Values

insertEdgeSQL6

private static final java.lang.String insertEdgeSQL6

See Also:

Constant Field Values

insertNodeSQL1

private static final java.lang.String insertNodeSQL1

See Also:

Constant Field Values

insertNodeSQL2

private static final java.lang.String insertNodeSQL2

See Also:

Constant Field Values

insertNodeSQL3

private static final java.lang.String insertNodeSQL3

See Also:

Constant Field Values

insertNodeSQL4

private static final java.lang.String insertNodeSQL4

See Also:

Constant Field Values

insertSpanSQL1

private static final java.lang.String insertSpanSQL1

See Also:

Constant Field Values

insertSpanSQL2

private static final java.lang.String insertSpanSQL2

See Also:

Constant Field Values

insertSpanSQL3

private static final java.lang.String insertSpanSQL3

See Also:

Constant Field Values

insertSpanSQL4

private static final java.lang.String insertSpanSQL4

See Also:

Constant Field Values

insertSpanSQL5

private static final java.lang.String insertSpanSQL5

See Also:

Constant Field Values

insertSpanSQL6

private static final java.lang.String insertSpanSQL6

See Also:

Constant Field Values

insertStoreSQL1

private static final java.lang.String insertStoreSQL1

See Also:

Constant Field Values

insertStoreSQL2

private static final java.lang.String insertStoreSQL2

See Also:

Constant Field Values

insertStoreSQL3

private static final java.lang.String insertStoreSQL3

See Also:

Constant Field Values

insertStoreSQL4

private static final java.lang.String insertStoreSQL4

See Also:

Constant Field Values

INTEGER

private static final java.lang.String INTEGER

See Also:

Constant Field Values

isNameUniqueSQL1

private static final java.lang.String isNameUniqueSQL1

See Also:

Constant Field Values

isNameUniqueSQL2

private static final java.lang.String isNameUniqueSQL2

See Also:

Constant Field Values

queryNodesSQL1

private static final java.lang.String queryNodesSQL1

See Also:

Constant Field Values

queryNodesSQL2

private static final java.lang.String queryNodesSQL2

See Also:

Constant Field Values

STRING

private static final java.lang.String STRING

See Also:

Constant Field Values

updateDatatypeSQL1

private static final java.lang.String updateDatatypeSQL1

See Also:

Constant Field Values

updateDatatypeSQL2

private static final java.lang.String updateDatatypeSQL2

See Also:

Constant Field Values

updateDatatypeSQL3

private static final java.lang.String updateDatatypeSQL3

See Also:

Constant Field Values

updateDatatypeSQL4

private static final java.lang.String updateDatatypeSQL4

See Also:

Constant Field Values

addMissingNodes

private boolean addMissingNodes

nodeSpan

public static final char nodeSpan

See Also:

Constant Field Values

edgeSpan

public static final char edgeSpan

See Also:

Constant Field Values

noSeq

private static final java.lang.String noSeq

See Also:

Constant Field Values

conn

private java.sql.Connection conn

connected

private boolean connected

debug

public Debug debug

edgeNames

private java.util.ArrayList edgeNames

edgeTypes

private java.util.ArrayList edgeTypes

nodeTypes

private java.util.ArrayList nodeTypes

hid

private int hid

schemaName

private java.lang.String schemaName

Constructor Detail

HdmStore

public HdmStore()

Default constructor assumes only error messages should be displayed (not debugs)

HdmStore

public HdmStore(Debug pDebug)

Constructor is passed debug class to send debug & error messages to

Method Detail

addEdge

public boolean addEdge(Edge edge)

Takes an Edge struture and stores this in the database. Returned boolean indicates if successful.

addNode

public boolean addNode(java.lang.String nodeType,
                       java.lang.String nodeValue)

Takes a node type and a value and adds to the database

checkIfExistsAsASpan

private boolean checkIfExistsAsASpan(int id,
                                     char edgeOrNode)

Does the specified edge appear as a span in another edge?

checkTablesAreSetUp

private boolean checkTablesAreSetUp(java.util.ArrayList tablesInDB)

Checks that the tables listed in the ArrayList passed exist in the Postgres database

connect

public boolean connect()

If connecting to the HDM store without a schema being passed assume same data source as for the MDR

connect

public boolean connect(java.lang.String schemaName)

Connect to the database using the access method for the named schema. As no password has been supplied assume its null.

connect

public boolean connect(java.lang.String schemaName,
                       java.lang.String passWord)

Connect to the database using the access method for the named schema using the access method in the repository for the schema and the password supplied.

createDBtables

public boolean createDBtables()

createDBtables

public boolean createDBtables(java.lang.String schemaName)

Check to see if the repository tables are in place on the HDM store data source. If not, create them.

createHdmStore

public boolean createHdmStore(java.lang.String schemaName,
                              java.lang.String hdmStoreName)

Create a logical HDM store for the given schema. Check schema exists and add default node type of String for all the nodes in the schema.

deleteEdge

public boolean deleteEdge(java.lang.String edgeType,
                          java.lang.String edgeValue)

Check the node type is valid & and instance of the node with this value exists. If it does - delete it.

deleteNode

public boolean deleteNode(java.lang.String nodeType,
                          java.lang.String nodeValue)

Check the node type is valid & and instance of the node with this value exists. If it does - delete it.

dropSequence

public void dropSequence()

Older versions of Postgres do not automatically drop sequences created for primary keys etc when the table is dropped - this loops through dropping the sequences explicitly.

dropTables

private void dropTables(java.util.ArrayList tablesInDB)

Drop all the tables named in the ArrayList passed

edgeExists

public boolean edgeExists(Span span)

Test to see if an edge exists has been passed a Span structure - split this out into type and and value and return the result.

edgeExists

public boolean edgeExists(java.lang.String edgeType,
                          java.lang.String edgeValues)

Does and edge with this type and value exist in the HDM store?

edgeInstanceExists

public boolean edgeInstanceExists(java.lang.String type,
                                  java.lang.String values)

Check to see if an instance of this edge exists in the HDM store

edgeInstanceId

private int edgeInstanceId(java.lang.String type,
                           java.lang.String values)

Given an edge type (e.g. <> ) and an instance (e.g. [worksIn,Dean,NG26]) return the edge ID that identifies the edge in the HDM store.

edgeName

private java.lang.String edgeName(java.lang.String type)

Edge types such as <> include an edge name (which may be '_' for blank). Given an edge type, return the edge name.

edgeNameIsUnique

public boolean edgeNameIsUnique(java.lang.String edgeName)

Edge names dont have to be unique - the combination of edge name and types is unique i.e. you could have both edges <> and <> (though its probably a bad idea if you have) Given an edge name e.g. 'worksIn' return a boolean to indicate if its unique

edgeTypeExists

public boolean edgeTypeExists(java.lang.String edgeType)

Given an edge type e.g. <> does that edge exist in the schema?

edgeTypeForName

public java.lang.String edgeTypeForName(java.lang.String edgeName)

Assuming edge name is unique (which need to be checked before calling) return its edge type e.g. passed livesAt return <>

getEdgeInstances

public java.util.LinkedList getEdgeInstances(java.lang.String edgeType)

Return all the instances of the passed edge type as a LinkedList of Span elements, each Span representing an instance of an edge.

getNodeInstances

public java.util.LinkedList getNodeInstances(java.lang.String nodeType)

Given a node type return all the instances in the HDM store as a LinkedList with elements of type Span, each element representing an instance

getSpans

public java.util.LinkedList getSpans(int hid,
                                     int eid)

For the edge specified return a LinkedList with each element of type Span representing a span in that edge.

hdmStoreExists

public boolean hdmStoreExists(java.lang.String hdmStoreName)

Is there an HDM store with the passed name in the repository?

hid

public int hid(java.lang.String hdmStoreName)

Given an HDM store name return its row id number (or -1 if it does not exist)

listNodes

public void listNodes()

Want to display all the nodes so pass just a wildcard as a the pattern

listNodes

public void listNodes(java.lang.String nodeType)

List the instance nodes of the passed nodeType (or wildcard)

maxIdNumber

private int maxIdNumber(java.lang.String columnName,
                        java.lang.String tableName)

For the specified table / column, what is the maximum id number?

nodeExists

public boolean nodeExists(Span span)

For the node instance specifed in the Span data structure check if it exists in the HDM store

nodeExists

public boolean nodeExists(java.lang.String nodeType,
                          java.lang.String nodeValue)

For the node instance specifed by node type & value, check if it exists in the HDM store

nodeInstancesExist

private boolean nodeInstancesExist(java.lang.String nodeType)

Check whether any instances of this node type are currently stored in the HDM store

nodeTypeExists

public boolean nodeTypeExists(java.lang.String nodeType)

Check whether any instances of this node type are currently stored in the HDM store

numberOfRowsInResultSet

public int numberOfRowsInResultSet(java.sql.ResultSet rset)

Given a result set - how many rows are in it?

okToAddEdge

public boolean okToAddEdge(Edge edge)

Given an Edge is it OK to add the edge e.g. are all the spans valid type & do the instances exist?

populateDatabaseId

private Span populateDatabaseId(Span span)

Given a Span which represents either a node or an edge, in terms of its type & value populate the fields in the span structure that identify the rows in the database used to store this span.

populateEdgeValue

private Span populateEdgeValue(Span span)

This Span represents an edge - get the edge details from the database and update the span.

populateNodeValue

private Span populateNodeValue(Span span)

This Span represents a node - get the node details from the database and update the span.

retrieveNodes

private java.util.LinkedList retrieveNodes(java.lang.String nodeType,
                                           boolean print)

For the passed node type (may be a wildcard) get the node instances and return them as a LinkedList of EdgeElement. If print is true then output the results as they are found.

schemaName

public java.lang.String schemaName(java.lang.String hdmStoreName)

Given an HDM store name return the name of the schema it stores data for

setAddMissingNodes

public void setAddMissingNodes(boolean pAddMissingNodes)

If you try to add an instance of an edge then all the nodes and edges that are spans of the new edge must already exist in the database. Setting add missing nodes will insert any missing nodes that would otherwise cause an add edge to fail.

setDatatype

public boolean setDatatype(java.lang.String nodeType,
                           java.lang.String datatype)

The meta data for an HDM store is contained in the associated AutoMed schema except for the data type of the nodes in the schema which are set with this method (initially they default to String)

setupStoreTables

private void setupStoreTables(java.util.ArrayList tablesInDB)

Passed a set of tables that exist in the database create any missing ones

tablesInDB

private java.util.ArrayList tablesInDB()

Get a list of tables that exist in the database

use

public boolean use(java.lang.String hdmStoreName)

Use the named HDM store - subsequent calls to this HdmStore will use this store as default