public TwoEntityOneAuditedQueryGenerator(AuditEntitiesConfiguration verEntCfg,
IAuditStrategy auditStrategy,
string versionsMiddleEntityName,
MiddleIdData referencingIdData,
MiddleIdData referencedIdData,
IEnumerable<MiddleComponentData> componentDatas)
{
this.referencingIdData = referencingIdData;
/*
* The query that we need to create:
* SELECT new list(ee, e) FROM referencedEntity e, middleEntity ee
* WHERE
* (entities referenced by the middle table; id_ref_ed = id of the referenced entity)
* ee.id_ref_ed = e.id_ref_ed AND
* (only entities referenced by the association; id_ref_ing = id of the referencing entity)
* ee.id_ref_ing = :id_ref_ing AND
*
* (the association at revision :revision)
* --> For DefaultAuditStrategy:
* ee.revision = (SELECT max(ee2.revision) FROM middleEntity ee2
* WHERE ee2.revision <= :revision AND ee2.originalId.* = ee.originalId.*)
* --> for ValidityAuditStrategy:
* ee.revision <= :revision and (ee.endRevision > :revision or ee.endRevision is null)
*
* AND
*
* (only non-deleted entities and associations)
* ee.revision_type != DEL
*/
var revisionPropertyPath = verEntCfg.RevisionNumberPath;
var originalIdPropertyName = verEntCfg.OriginalIdPropName;
var eeOriginalIdPropertyPath = "ee." + originalIdPropertyName;
// SELECT new list(ee) FROM middleEntity ee
var qb = new QueryBuilder(versionsMiddleEntityName, "ee");
qb.AddFrom(referencedIdData.EntityName, "e");
qb.AddProjection("new list", "ee, e", false, false);
// WHERE
var rootParameters = qb.RootParameters;
// ee.id_ref_ed = e.id_ref_ed
referencedIdData.PrefixedMapper.AddIdsEqualToQuery(rootParameters, eeOriginalIdPropertyPath,
referencedIdData.OriginalMapper, "e");
// ee.originalId.id_ref_ing = :id_ref_ing
referencingIdData.PrefixedMapper.AddNamedIdEqualsToQuery(rootParameters, originalIdPropertyName, true);
// (with ee association at revision :revision)
// --> based on auditStrategy (see above)
auditStrategy.AddAssociationAtRevisionRestriction(qb, revisionPropertyPath,
verEntCfg.RevisionEndFieldName, true, referencingIdData, versionsMiddleEntityName,
eeOriginalIdPropertyPath, revisionPropertyPath, originalIdPropertyName, componentDatas.ToArray());
// ee.revision_type != DEL
rootParameters.AddWhereWithNamedParam(verEntCfg.RevisionTypePropName, "!=", "delrevisiontype");
var sb = new StringBuilder();
qb.Build(sb, null);
queryString = sb.ToString();
}
public void AddAssociationAtRevisionRestriction(QueryBuilder rootQueryBuilder,
string revisionProperty,
string revisionEndProperty,
bool addAlias,
MiddleIdData referencingIdData,
string versionsMiddleEntityName,
string eeOriginalIdPropertyPath,
string revisionPropertyPath,
string originalIdPropertyName,
params MiddleComponentData[] componentDatas)
{
var rootParameters = rootQueryBuilder.RootParameters;
// SELECT max(ee2.revision) FROM middleEntity ee2
var maxEeRevQb = rootQueryBuilder.NewSubQueryBuilder(versionsMiddleEntityName, "ee2");
maxEeRevQb.AddProjection("max", revisionPropertyPath, false);
// WHERE
var maxEeRevQbParameters = maxEeRevQb.RootParameters;
// ee2.revision <= :revision
maxEeRevQbParameters.AddWhereWithNamedParam(revisionPropertyPath, "<=", "revision");
// ee2.originalId.* = ee.originalId.*
var ee2OriginalIdPropertyPath = "ee2." + originalIdPropertyName;
referencingIdData.PrefixedMapper.AddIdsEqualToQuery(maxEeRevQbParameters, eeOriginalIdPropertyPath, ee2OriginalIdPropertyPath);
foreach (var componentData in componentDatas)
{
componentData.ComponentMapper.AddMiddleEqualToQuery(maxEeRevQbParameters, eeOriginalIdPropertyPath, ee2OriginalIdPropertyPath);
}
// add subquery to rootParameters
rootParameters.AddWhere(revisionProperty, addAlias, "=", maxEeRevQb);
}
public OneAuditEntityQueryGenerator(GlobalConfiguration globalCfg, AuditEntitiesConfiguration verEntCfg,
MiddleIdData referencingIdData, String referencedEntityName,
IIdMapper referencedIdMapper)
{
this.referencingIdData = referencingIdData;
/*
* The query that we need to create:
* SELECT new list(e) FROM versionsReferencedEntity e
* WHERE
* (only entities referenced by the association; id_ref_ing = id of the referencing entity)
* e.id_ref_ing = :id_ref_ing AND
* (selecting e entities at revision :revision)
* e.revision = (SELECT max(e2.revision) FROM versionsReferencedEntity e2
* WHERE e2.revision <= :revision AND e2.id = e.id) AND
* (only non-deleted entities)
* e.revision_type != DEL
*/
String revisionPropertyPath = verEntCfg.RevisionNumberPath;
String originalIdPropertyName = verEntCfg.OriginalIdPropName;
String versionsReferencedEntityName = verEntCfg.GetAuditEntityName(referencedEntityName);
// SELECT new list(e) FROM versionsEntity e
QueryBuilder qb = new QueryBuilder(versionsReferencedEntityName, "e");
qb.AddProjection("new list", "e", false, false);
// WHERE
Parameters rootParameters = qb.RootParameters;
// e.id_ref_ed = :id_ref_ed
referencingIdData.PrefixedMapper.AddNamedIdEqualsToQuery(rootParameters, null, true);
// SELECT max(e.revision) FROM versionsReferencedEntity e2
QueryBuilder maxERevQb = qb.NewSubQueryBuilder(versionsReferencedEntityName, "e2");
maxERevQb.AddProjection("max", revisionPropertyPath, false);
// WHERE
Parameters maxERevQbParameters = maxERevQb.RootParameters;
// e2.revision <= :revision
maxERevQbParameters.AddWhereWithNamedParam(revisionPropertyPath, "<=", "revision");
// e2.id = e.id
referencedIdMapper.AddIdsEqualToQuery(maxERevQbParameters,
"e." + originalIdPropertyName, "e2." + originalIdPropertyName);
// e.revision = (SELECT max(...) ...)
rootParameters.AddWhere(revisionPropertyPath, false, globalCfg.getCorrelatedSubqueryOperator(), maxERevQb);
// e.revision_type != DEL
rootParameters.AddWhereWithNamedParam(verEntCfg.RevisionTypePropName, false, "!=", "delrevisiontype");
StringBuilder sb = new StringBuilder();
qb.Build(sb, EmptyDictionary<String, object>.Instance);
queryString = sb.ToString();
}
public OneEntityQueryGenerator(AuditEntitiesConfiguration verEntCfg,
String versionsMiddleEntityName,
MiddleIdData referencingIdData,
IEnumerable<MiddleComponentData> componentDatas)
{
this._referencingIdData = referencingIdData;
/*
* The query that we need to create:
* SELECT new list(ee) FROM middleEntity ee WHERE
* (only entities referenced by the association; id_ref_ing = id of the referencing entity)
* ee.originalId.id_ref_ing = :id_ref_ing AND
* (the association at revision :revision)
* ee.revision = (SELECT max(ee2.revision) FROM middleEntity ee2
* WHERE ee2.revision <= :revision AND ee2.originalId.* = ee.originalId.*) AND
* (only non-deleted entities and associations)
* ee.revision_type != DEL
*/
String revisionPropertyPath = verEntCfg.RevisionNumberPath;
String originalIdPropertyName = verEntCfg.OriginalIdPropName;
// SELECT new list(ee) FROM middleEntity ee
QueryBuilder qb = new QueryBuilder(versionsMiddleEntityName, "ee");
qb.AddProjection("new list", "ee", false, false);
// WHERE
Parameters rootParameters = qb.RootParameters;
// ee.originalId.id_ref_ing = :id_ref_ing
referencingIdData.PrefixedMapper.AddNamedIdEqualsToQuery(rootParameters, originalIdPropertyName, true);
// SELECT max(ee2.revision) FROM middleEntity ee2
QueryBuilder maxRevQb = qb.NewSubQueryBuilder(versionsMiddleEntityName, "ee2");
maxRevQb.AddProjection("max", revisionPropertyPath, false);
// WHERE
Parameters maxRevQbParameters = maxRevQb.RootParameters;
// ee2.revision <= :revision
maxRevQbParameters.AddWhereWithNamedParam(revisionPropertyPath, "<=", "revision");
// ee2.originalId.* = ee.originalId.*
String eeOriginalIdPropertyPath = "ee." + originalIdPropertyName;
String ee2OriginalIdPropertyPath = "ee2." + originalIdPropertyName;
referencingIdData.PrefixedMapper.AddIdsEqualToQuery(maxRevQbParameters, eeOriginalIdPropertyPath, ee2OriginalIdPropertyPath);
foreach (MiddleComponentData componentData in componentDatas) {
componentData.ComponentMapper.AddMiddleEqualToQuery(maxRevQbParameters, eeOriginalIdPropertyPath, ee2OriginalIdPropertyPath);
}
// ee.revision = (SELECT max(...) ...)
rootParameters.AddWhere(revisionPropertyPath, "=", maxRevQb);
// ee.revision_type != DEL
rootParameters.AddWhereWithNamedParam(verEntCfg.RevisionTypePropName, "!=", "delrevisiontype");
StringBuilder sb = new StringBuilder();
qb.Build(sb, EmptyDictionary<String, object>.Instance);
_queryString = sb.ToString();
}
public TwoEntityOneAuditedQueryGenerator(
AuditEntitiesConfiguration verEntCfg,
String versionsMiddleEntityName,
MiddleIdData referencingIdData,
MiddleIdData referencedIdData,
IEnumerable<MiddleComponentData> componentDatas)
{
this.referencingIdData = referencingIdData;
/*
* The query that we need to create:
* SELECT new list(ee, e) FROM referencedEntity e, middleEntity ee
* WHERE
* (entities referenced by the middle table; id_ref_ed = id of the referenced entity)
* ee.id_ref_ed = e.id_ref_ed AND
* (only entities referenced by the association; id_ref_ing = id of the referencing entity)
* ee.id_ref_ing = :id_ref_ing AND
* (the association at revision :revision)
* ee.revision = (SELECT max(ee2.revision) FROM middleEntity ee2
* WHERE ee2.revision <= :revision AND ee2.originalId.* = ee.originalId.*) AND
* (only non-deleted entities and associations)
* ee.revision_type != DEL
*/
String revisionPropertyPath = verEntCfg.RevisionNumberPath;
String originalIdPropertyName = verEntCfg.OriginalIdPropName;
String eeOriginalIdPropertyPath = "ee." + originalIdPropertyName;
// SELECT new list(ee) FROM middleEntity ee
QueryBuilder qb = new QueryBuilder(versionsMiddleEntityName, "ee");
qb.AddFrom(referencedIdData.EntityName, "e");
qb.AddProjection("new list", "ee, e", false, false);
// WHERE
Parameters rootParameters = qb.RootParameters;
// ee.id_ref_ed = e.id_ref_ed
referencedIdData.PrefixedMapper.AddIdsEqualToQuery(rootParameters, eeOriginalIdPropertyPath,
referencedIdData.OriginalMapper, "e");
// ee.originalId.id_ref_ing = :id_ref_ing
referencingIdData.PrefixedMapper.AddNamedIdEqualsToQuery(rootParameters, originalIdPropertyName, true);
// ee.revision = (SELECT max(...) ...)
QueryGeneratorTools.AddAssociationAtRevision(qb, rootParameters, referencingIdData, versionsMiddleEntityName,
eeOriginalIdPropertyPath, revisionPropertyPath, originalIdPropertyName, componentDatas);
// ee.revision_type != DEL
rootParameters.AddWhereWithNamedParam(verEntCfg.RevisionTypePropName, "!=", "delrevisiontype");
StringBuilder sb = new StringBuilder();
qb.Build(sb, EmptyDictionary<String, Object>.Instance);
queryString = sb.ToString();
}
public static void AddEntityAtRevision(GlobalConfiguration globalCfg, QueryBuilder qb, Parameters rootParameters,
MiddleIdData idData, String revisionPropertyPath, String originalIdPropertyName,
String alias1, String alias2)
{
// SELECT max(e.revision) FROM versionsReferencedEntity e2
QueryBuilder maxERevQb = qb.NewSubQueryBuilder(idData.AuditEntityName, alias2);
maxERevQb.AddProjection("max", revisionPropertyPath, false);
// WHERE
Parameters maxERevQbParameters = maxERevQb.RootParameters;
// e2.revision <= :revision
maxERevQbParameters.AddWhereWithNamedParam(revisionPropertyPath, "<=", "revision");
// e2.id_ref_ed = e.id_ref_ed
idData.OriginalMapper.AddIdsEqualToQuery(maxERevQbParameters,
alias1 + "." + originalIdPropertyName, alias2 +"." + originalIdPropertyName);
// e.revision = (SELECT max(...) ...)
rootParameters.AddWhere("e." + revisionPropertyPath, false, globalCfg.getCorrelatedSubqueryOperator(), maxERevQb);
}
public void AddEntityAtRevisionRestriction(GlobalConfiguration globalCfg, QueryBuilder rootQueryBuilder, string revisionProperty, string revisionEndProperty, bool addAlias, MiddleIdData idData, string revisionPropertyPath, string originalIdPropertyName, string alias1, string alias2)
{
var rootParameters = rootQueryBuilder.RootParameters;
// create a subquery builder
// SELECT max(e.revision) FROM versionsReferencedEntity e2
var maxERevQb = rootQueryBuilder.NewSubQueryBuilder(idData.AuditEntityName, alias2);
maxERevQb.AddProjection("max", revisionPropertyPath, false);
// WHERE
var maxERevQbParameters = maxERevQb.RootParameters;
// e2.revision <= :revision
maxERevQbParameters.AddWhereWithNamedParam(revisionPropertyPath, "<=", "revision");
// e2.id_ref_ed = e.id_ref_ed
idData.OriginalMapper.AddIdsEqualToQuery(maxERevQbParameters,
alias1 + "." + originalIdPropertyName, alias2 + "." + originalIdPropertyName);
// add subquery to rootParameters
var subqueryOperator = globalCfg.CorrelatedSubqueryOperator;
rootParameters.AddWhere(revisionProperty, addAlias, subqueryOperator, maxERevQb);
}
public static void AddAssociationAtRevision(QueryBuilder qb, Parameters rootParameters,
MiddleIdData referencingIdData, String versionsMiddleEntityName,
String eeOriginalIdPropertyPath, String revisionPropertyPath,
String originalIdPropertyName, IEnumerable<MiddleComponentData> componentDatas)
{
// SELECT max(ee2.revision) FROM middleEntity ee2
QueryBuilder maxEeRevQb = qb.NewSubQueryBuilder(versionsMiddleEntityName, "ee2");
maxEeRevQb.AddProjection("max", revisionPropertyPath, false);
// WHERE
Parameters maxEeRevQbParameters = maxEeRevQb.RootParameters;
// ee2.revision <= :revision
maxEeRevQbParameters.AddWhereWithNamedParam(revisionPropertyPath, "<=", "revision");
// ee2.originalId.* = ee.originalId.*
String ee2OriginalIdPropertyPath = "ee2." + originalIdPropertyName;
referencingIdData.PrefixedMapper.AddIdsEqualToQuery(maxEeRevQbParameters, eeOriginalIdPropertyPath, ee2OriginalIdPropertyPath);
foreach (MiddleComponentData componentData in componentDatas) {
componentData.ComponentMapper.AddMiddleEqualToQuery(maxEeRevQbParameters, eeOriginalIdPropertyPath, ee2OriginalIdPropertyPath);
}
// ee.revision = (SELECT max(...) ...)
rootParameters.AddWhere(revisionPropertyPath, "=", maxEeRevQb);
}
public void AddWhere(String left, bool addAlias, String op, QueryBuilder right) {
StringBuilder expression = new StringBuilder();
if (addAlias) {
expression.Append(alias).Append(".");
}
expression.Append(left);
expression.Append(" ").Append(op).Append(" ");
expression.Append("(");
right.Build(expression, localQueryParamValues);
expression.Append(")");
expressions.Add(expression.ToString());
}
public void AddWhere(String left, String op, QueryBuilder right) {
AddWhere(left, true, op, right);
}