package liquibase.change.core;
import liquibase.change.*;
import liquibase.database.Database;
import liquibase.snapshot.SnapshotGeneratorFactory;
import liquibase.statement.SqlStatement;
import liquibase.statement.core.RenameViewStatement;
import liquibase.structure.core.View;
/**
* Renames an existing view.
*/
@DatabaseChange(name="renameView", description = "Renames an existing view", priority = ChangeMetaData.PRIORITY_DEFAULT, appliesTo = "view")
public class RenameViewChange extends AbstractChange {
private String catalogName;
private String schemaName;
private String oldViewName;
private String newViewName;
@DatabaseChangeProperty(mustEqualExisting ="view.catalog", since = "3.0")
public String getCatalogName() {
return catalogName;
}
public void setCatalogName(String catalogName) {
this.catalogName = catalogName;
}
@DatabaseChangeProperty(mustEqualExisting ="view.schema")
public String getSchemaName() {
return schemaName;
}
public void setSchemaName(String schemaName) {
this.schemaName = schemaName;
}
@DatabaseChangeProperty(mustEqualExisting = "view", description = "Name of the view to rename")
public String getOldViewName() {
return oldViewName;
}
public void setOldViewName(String oldViewName) {
this.oldViewName = oldViewName;
}
@DatabaseChangeProperty(description = "Name to rename the view to")
public String getNewViewName() {
return newViewName;
}
public void setNewViewName(String newViewName) {
this.newViewName = newViewName;
}
@Override
public SqlStatement[] generateStatements(Database database) {
return new SqlStatement[]{new RenameViewStatement(getCatalogName(), getSchemaName(), getOldViewName(), getNewViewName())};
}
@Override
protected Change[] createInverses() {
RenameViewChange inverse = new RenameViewChange();
inverse.setOldViewName(getNewViewName());
inverse.setNewViewName(getOldViewName());
return new Change[]{
inverse
};
}
@Override
public ChangeStatus checkStatus(Database database) {
try {
ChangeStatus changeStatus = new ChangeStatus();
View newView = SnapshotGeneratorFactory.getInstance().createSnapshot(new View(getCatalogName(), getSchemaName(), getNewViewName()), database);
View oldView = SnapshotGeneratorFactory.getInstance().createSnapshot(new View(getCatalogName(), getSchemaName(), getOldViewName()), database);
if (newView == null && oldView == null) {
return changeStatus.unknown("Neither view exists");
}
if (newView != null && oldView != null) {
return changeStatus.unknown("Both views exist");
}
changeStatus.assertComplete(newView != null, "New view does not exist");
return changeStatus;
} catch (Exception e) {
return new ChangeStatus().unknown(e);
}
}
@Override
public String getConfirmationMessage() {
return "View " + oldViewName + " renamed to " + newViewName;
}
@Override
public String getSerializedObjectNamespace() {
return STANDARD_CHANGELOG_NAMESPACE;
}
}