public String toSolutionModifierSQL() throws Exception {
if (q.isSelectQuery() || q.isConstructQuery()) {
return processSolutionModifierForSelectConstruct();
} else if (q.isDescribeQuery()) {
return processSolutionModifierForDescribe();
}
return null;
}
public String toTopQuerySQL(Set<Variable> explicitIRIBoundVariables) throws Exception {
if (q.isSelectQuery()) {
return processTopQueryForSelectDescribeConstruct(explicitIRIBoundVariables);
} else if (q.isAskQuery()) {
return processAskQuery();
} else if (q.isDescribeQuery()) {
return processTopQueryForSelectDescribeConstruct(explicitIRIBoundVariables);
} else if (q.isConstructQuery()) {
return processTopQueryForSelectDescribeConstruct(explicitIRIBoundVariables);
}
return null;
}
private String processSolutionModifierForSelectConstruct() throws Exception {
StringBuffer sql = new StringBuffer();
SolutionModifiers solutionModifiers = null;
if (q.isSelectQuery()) solutionModifiers = q.getSelectQuery().getSolutionModifier();
if (q.isConstructQuery()) solutionModifiers = q.getConstructQuery().getSolutionModifier();
/*
if(solutionModifiers!= null){
if(solutionModifiers.getLimitOffset()!=null){
sql.append(",\n");
boolean hasOffset = solutionModifiers.getLimitOffset().getOffset()>0;
AbstractSQLTemplate limitTemplate = new LimitTemplate(hasOffset?"limit_for_offset":"limit",q ,store, ctx, wrapper);
sql.append(limitTemplate.createSQLString());
if(hasOffset){
sql.append(",\n");
AbstractSQLTemplate offsetTemplate = new OffsetTemplate("offset",q ,store, ctx, wrapper);
sql.append(offsetTemplate.createSQLString());
}
}
//TODO: Mihaela: We are not currently handling other solution modifiers (e.g., ORDER BY).
} */
return sql.toString();
}
private String processSolutionModifierForDescribe() throws Exception {
StringBuffer sql = new StringBuffer();
if (q.getMainPattern() != null) sql.append(",\n");
AbstractSQLTemplate describeSQLTemplate =
new DescribeSQLTemplate("describe", q, store, ctx, wrapper);
sql.append(describeSQLTemplate.createSQLString());
/*
if(q.getDescribeQuery().getSolutionModifier() != null){
if(q.getDescribeQuery().getSolutionModifier().getLimitOffset()!=null){
sql.append(",\n");
AbstractSQLTemplate limitTemplate = new LimitTemplate("limit",q ,store, ctx, wrapper);
sql.append(limitTemplate.createSQLString());
if(q.getDescribeQuery().getSolutionModifier().getLimitOffset().getOffset()>0){
sql.append(",\n");
AbstractSQLTemplate offsetTemplate = new OffsetTemplate("offset",q ,store, ctx, wrapper);
sql.append(offsetTemplate.createSQLString());
}
}
}
*/
return sql.toString();
}