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HHH-18180 Informix IF EXISTS clauses support

This commit is contained in:
Vladimír Kuruc 2024-05-29 12:31:06 +02:00 committed by Christian Beikov
parent 0940c9806b
commit 5cfd7dfa82
2 changed files with 27 additions and 2 deletions
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19
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/InformixDialect.java
View File

@ -93,6 +93,7 @@ public class InformixDialect extends Dialect {
private final UniqueDelegate uniqueDelegate; private final UniqueDelegate uniqueDelegate;
private final LimitHandler limitHandler; private final LimitHandler limitHandler;
private final SequenceSupport sequenceSupport;
private final StandardForeignKeyExporter foreignKeyExporter = new StandardForeignKeyExporter( this ) { private final StandardForeignKeyExporter foreignKeyExporter = new StandardForeignKeyExporter( this ) {
@Override @Override
public String[] getSqlCreateStrings( public String[] getSqlCreateStrings(
@ -137,6 +138,7 @@ public class InformixDialect extends Dialect {
//version 11 and above, parameters are supported //version 11 and above, parameters are supported
//but I have not tested this at all! //but I have not tested this at all!
: new SkipFirstLimitHandler( getVersion().isSameOrAfter( 11 ) ); : new SkipFirstLimitHandler( getVersion().isSameOrAfter( 11 ) );
sequenceSupport = new InformixSequenceSupport( getVersion().isSameOrAfter( 11, 70 ) );
} }
@Override @Override
@ -399,7 +401,7 @@ public class InformixDialect extends Dialect {
@Override @Override
public SequenceSupport getSequenceSupport() { public SequenceSupport getSequenceSupport() {
return InformixSequenceSupport.INSTANCE; return sequenceSupport;
} }
@Override @Override
@ -417,6 +419,21 @@ public class InformixDialect extends Dialect {
return limitHandler; return limitHandler;
} }
@Override
public boolean supportsIfExistsBeforeTableName() {
return getVersion().isSameOrAfter( 11, 70 );
}
@Override
public boolean supportsIfExistsBeforeTypeName() {
return getVersion().isSameOrAfter( 11, 70 );
}
@Override
public boolean supportsIfExistsBeforeConstraintName() {
return getVersion().isSameOrAfter( 11, 70 );
}
@Override @Override
public boolean supportsOrderByInSubquery() { public boolean supportsOrderByInSubquery() {
// This is just a guess // This is just a guess

10
hibernate-community-dialects/src/main/java/org/hibernate/community/dialect/sequence/InformixSequenceSupport.java
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@ -16,11 +16,19 @@ import org.hibernate.dialect.sequence.SequenceSupport;
*/ */
public final class InformixSequenceSupport extends NextvalSequenceSupport { public final class InformixSequenceSupport extends NextvalSequenceSupport {
public static final SequenceSupport INSTANCE = new InformixSequenceSupport(); private boolean supportsIfExists = false;
public InformixSequenceSupport(boolean supportsIfExists){
this.supportsIfExists = supportsIfExists;
}
@Override @Override
public String getFromDual() { public String getFromDual() {
return " from informix.systables where tabid=1"; return " from informix.systables where tabid=1";
} }
@Override
public String getDropSequenceString(String sequenceName) {
return "drop sequence " + ( supportsIfExists ? "if exists " : "" ) + sequenceName;
}
} }