com.goldencode.p2j.schema

Class P2OAccessWorker

java.lang.Object

com.goldencode.p2j.pattern.AbstractPatternWorker

com.goldencode.p2j.schema.P2OAccessWorker

All Implemented Interfaces:

PatternWorker, DataModelTokenTypes

public final class P2OAccessWorker
extends AbstractPatternWorker
implements DataModelTokenTypes

A pattern worker that provides services to support the retrieval of information from previously created, persisted, P2O ASTs.

Currently, this worker supports lookups of converted Java schema names, based upon legacy, Progress schema names as input. Specifically, given a fully qualified, Progress database table name, the Java name for the corresponding Data Model Object (DMO) class can be retrieved. The Java name of the implicit (default) buffer for that table is also available. Given a fully qualified, Progress database field name, the Java name for the corresponding DMO getter and setter methods can be retrieved.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
class	P2OAccessWorker.Library Helper to lookup Java names for tables and fields, given their historical, Progress names.
private static class	P2OAccessWorker.QueryIndexInfo Helper class which keeps track of queries with suspicious index selection, and which writes content to the unindexed query report.
private static class	P2OAccessWorker.WorkArea Context local work area.

Field Summary

Fields

Modifier and Type	Field and Description
private static ContextLocal<P2OAccessWorker.WorkArea>	context Context local work area.
private static ConversionStatus	LOG Logger.
private static java.util.Collection<java.lang.Integer>	types Table token types

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
P2OAccessWorker() Default constructor which initializes libraries.

Method Summary

Modifier and Type	Method and Description
private static java.lang.String	getTableName(Aast ast) Extract the target table (or temp/work-table or buffer) name from the given AST, which is expected to be of type RECORD_PHRASE or EMBEDDED_SQL.
java.lang.Object	resolveConstant(java.lang.String constant) Resolve constant to a literal which can be compiled into expressions.
void	visitAst(Aast ast) This method is called each time a new AST is visited, just before the pattern engine processes that AST.

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

finish, initialize, leaveAst

Field Detail

LOG

private static final ConversionStatus LOG

Logger.

types

private static final java.util.Collection<java.lang.Integer> types

Table token types

context

private static final ContextLocal<P2OAccessWorker.WorkArea> context

Context local work area.

Constructor Detail

P2OAccessWorker

public P2OAccessWorker()

Default constructor which initializes libraries.

Method Detail

getTableName

private static java.lang.String getTableName(Aast ast)
                                      throws SchemaException

Extract the target table (or temp/work-table or buffer) name from the given AST, which is expected to be of type RECORD_PHRASE or EMBEDDED_SQL.

Parameters:

ast - Record phrase or embedded SQL AST.

Returns:

Target table name, qualified by database schema name.

Throws:

SchemaException - if an unexpected AST node is passed to this method.

visitAst

public void visitAst(Aast ast)

This method is called each time a new AST is visited, just before the pattern engine processes that AST. We exploit this hook by loading the current temp/work-table schema (P2O) AST into the P2OLookup class' state. This enables us to resolve references to temp and work tables, which are local to the currently loaded source file AST.

Specified by:

visitAst in interface PatternWorker

Parameters:

ast - The root node of the source AST about to be processed by the pattern engine.

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.