Replace Query with AbstractQuery in public APIs

[Copilot]

Generalizes API signatures to accept AbstractQuery<*> instead of the more specific Query type where Query-specific methods are not needed.

Changes

Core module (DatabaseClient.kt)

• Query execution methods: executeQuery(), executeQueryForList(), executeBatchQuery()
• Extension functions: getFieldExpressionSet(), getFieldExpressionSetWithTransaction(), Row.toExposedResultRow()

CRUD module (Queries.kt)

• Return types in select() and selectBatch() where receiver is ColumnSet/FieldSet
• Preserved Query.() -> Query for builder lambdas requiring Query-specific methods like where()

CRUD-with-mapper module (QueriesWithMapper.kt)

• Query parameters in executeQueryWithMapper(), executeVertxSqlClientRowQueryWithMapper()
• Preserved Query.() -> Query for selectWithMapper() builder lambda

Example

// Before: only accepts Query
suspend fun executeQuery(query: Query): RowSet<ResultRow>

// After: accepts any AbstractQuery subtype
suspend fun executeQuery(query: AbstractQuery<*>): RowSet<ResultRow>

// Builder lambdas requiring Query methods remain typed as Query
suspend fun selectSingleColumn(
    column: Column<T>, 
    buildQuery: Query.() -> Query  // Needs where(), groupBy(), etc.
)

Since Query extends AbstractQuery, this change is backward compatible while enabling the API to work with all query types in Exposed's hierarchy.

Warning

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Original prompt

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This section details on the original issue you should resolve

<issue_title>Try replacing Query with AbstractQuery as much as possible in the APIs</issue_title>
<issue_description></issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Try replacing Query with AbstractQuery as much as possible in the APIs #29

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[ShreckYe]

Postponed to merge as part of #30.