com.goldencode.p2j.schema

Class DataModelWorker

java.lang.Object

com.goldencode.p2j.pattern.AbstractPatternWorker

com.goldencode.p2j.convert.AbstractConversionWorker

com.goldencode.p2j.schema.DataModelWorker

All Implemented Interfaces:

PatternWorker, DataModelTokenTypes

public final class DataModelWorker
extends AbstractConversionWorker
implements DataModelTokenTypes

A pattern worker that provides services to support the conversion of Progress schema data into a relational data model AST.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	DataModelWorker.ClassComparator Comparator implementation which sorts ASTs which represent data model object (DMO) classes.
static class	DataModelWorker.DMOElementInfo A simple helper class to load the content of a dmo_index.xml file, without having to know all the semantics of the nodes.
class	DataModelWorker.Library Helper to create, edit, move and delete data model ASTs.
private static class	DataModelWorker.PropertyComparator Comparator implementation which sorts ASTs which have an "order" annotation into ascending order, according to the numeric value of that attribute.
private static class	DataModelWorker.WorkArea Context local work area.

Field Summary

Fields

Modifier and Type	Field and Description
private static ContextLocal<DataModelWorker.WorkArea>	context Context local work area.
private static ConversionStatus	LOG Logger.
private static java.lang.String	P2O_POSTFIX File extension appended to schema filenames

Fields inherited from class com.goldencode.p2j.convert.AbstractConversionWorker

PEER_ID

Fields inherited from interface com.goldencode.p2j.schema.DataModelTokenTypes

BOOL_FALSE, BOOL_TRUE, CLASS, COMPOSITE, CONSTR_COL, DATA_MODEL, DATE_LITERAL, DATETIME_LITERAL, DATETIME_TZ_LITERAL, DEC_LITERAL, FOREIGN, GENERATOR, INDEX, INDEX_COL, INITIAL, MANY_TO_ONE, NULL_LITERAL, NUM_LITERAL, ONE_TO_MANY, ONE_TO_ONE, PRIMARY, PROPERTY, RELATION_COL, SEQUENCE, STRING, TABLE, TRIGGER, UNIQUE, UNKNOWN

Constructor Summary

Constructors

Constructor and Description
DataModelWorker() Default constructor which initializes libraries.

Method Summary

Modifier and Type	Method and Description
static DataModelAst	createAst(int type, java.lang.String text, Aast parent, AstSymbolResolver resolver) Worker routine to centralize creation of new data model ASTs.
static DataModelAst	createPeerAst(Aast source, int type, java.lang.String text, Aast parent, AstSymbolResolver resolver) Worker routine for peer AST creation.
Aast	createRootAst(Aast peerRoot, boolean virtualFile) Worker routine to centralize creation of a new data model AST that is a root node.
Aast	createRootAst(Aast peerRoot, java.lang.String filename, boolean virtualFile) Worker routine to centralize creation of a new data model AST that is a root node.
void	finish() Hook to provide termination processing for a pattern worker.
private java.lang.String	generateFilename(Aast ast) Generate a unique data model AST persistence filename based on the current source AST filename.
private boolean	isXDependentUponY(Aast x, Aast y) Tests one class AST for dependence upon another.
java.lang.Object	resolveConstant(java.lang.String constant) Resolve constant to a literal which can be compiled into expressions.

Methods inherited from class com.goldencode.p2j.convert.AbstractConversionWorker

crossReferencePeerAsts, getClosestPeerId, getParentPeer, initializeAst, initializeAst, initializeRootAst, initializeRootAst

Methods inherited from class com.goldencode.p2j.pattern.AbstractPatternWorker

getCopy, getLibrary, getResolver, getSource, isConditionalRuleSets, isFlagActivated, isRuntimeQueryMode, registerTree, setLibrary

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.goldencode.p2j.pattern.PatternWorker

initialize, leaveAst, visitAst

Field Detail

LOG

private static final ConversionStatus LOG

Logger.

P2O_POSTFIX

private static final java.lang.String P2O_POSTFIX

File extension appended to schema filenames

See Also:

Constant Field Values

context

private static final ContextLocal<DataModelWorker.WorkArea> context

Context local work area.

Constructor Detail

DataModelWorker

public DataModelWorker()

Default constructor which initializes libraries.

Method Detail

createAst

public static DataModelAst createAst(int type,
                                     java.lang.String text,
                                     Aast parent,
                                     AstSymbolResolver resolver)

Worker routine to centralize creation of new data model ASTs. All ID setup and parent linkages are established if the parent AST is passed as a parameter, otherwise only an unidentified, standalone AST is created. If a parent AST is passed, a resolver instance should also be provided.

Parameters:

type - The token type for the data model AST.

text - The text for the AST.

parent - The parent AST node or null.

resolver - The current instance of the AstSymbolResolver in use or null.

Returns:

The AST that was created.

createPeerAst

public static DataModelAst createPeerAst(Aast source,
                                         int type,
                                         java.lang.String text,
                                         Aast parent,
                                         AstSymbolResolver resolver)

Worker routine for peer AST creation. All ID setup and parent linkages are established and bidirectional peer ID annotations are written in source and target nodes.

Parameters:

type - The token type for the AST.

text - The text for the AST.

parent - The parent AST node.

resolver - The current instance of the AstSymbolResolver in use.

Returns:

The AST that was created.

createRootAst

public Aast createRootAst(Aast peerRoot,
                          boolean virtualFile)
                   throws ConfigurationException

Worker routine to centralize creation of a new data model AST that is a root node. A new file ID is registered in the AstManager and set into the AST.

Parameters:

peerRoot - Root node of Progress schema AST currently being processed.

virtualFile - If true the file is not supposed to be persisted into the file system, the file name is used to map some ID to the AST

Returns:

The root AST that was created.

Throws:

ConfigurationException - if P2J environment is not properly initialized.

createRootAst

public Aast createRootAst(Aast peerRoot,
                          java.lang.String filename,
                          boolean virtualFile)
                   throws ConfigurationException

Worker routine to centralize creation of a new data model AST that is a root node. A new file ID is registered in the AstManager and set into the AST.

Parameters:

peerRoot - Root node of Progress schema AST currently being processed.

filename - The file in which to persist the new AST.

virtualFile - If true the file is not supposed to be persisted into the file system, the file name is used to map some ID to the AST

Returns:

The root AST that was created.

Throws:

ConfigurationException - if P2J environment is not properly initialized.

resolveConstant

public java.lang.Object resolveConstant(java.lang.String constant)

Resolve constant to a literal which can be compiled into expressions.

Specified by:

resolveConstant in interface PatternWorker

Overrides:

resolveConstant in class AbstractPatternWorker

Parameters:

constant - Constant indicating a data model token name.

Returns:

Token type associated with the token name.

finish

public void finish()

Hook to provide termination processing for a pattern worker.

Specified by:

finish in interface PatternWorker

generateFilename

private java.lang.String generateFilename(Aast ast)

Generate a unique data model AST persistence filename based on the current source AST filename. The source file name's extension is removed and replaced with ".p2o".

Parameters:

ast - Current source AST.

Returns:

A unique filename based on the source file root name with ".p2o" appended.

isXDependentUponY

private boolean isXDependentUponY(Aast x,
                                  Aast y)

Tests one class AST for dependence upon another. The dependency test includes the tested class x, as well as the entire tree of its dependencies. In other words, test whether x or any class upon which it is dependent is dependent upon y.

Parameters:

x - Class AST node whose dependencies are being checked.

y - Class AST node against which to test x for dependence.

Returns:

true if x (or any of its dependent classes) is dependent upon y.