String describe(Session session, int blanks) {
StringBuffer sb = new StringBuffer();
String b = ValuePool.spaceString.substring(0, blanks);
sb.append(b).append("index=").append(rangeIndex.getName().name).append("\n");
if (hasIndexCondition()) {
if (indexedColumnCount > 0) {
sb.append(b).append("start conditions=[");
for (int j = 0; j < indexedColumnCount; j++) {
if (indexCond != null && indexCond[j] != null) {
sb.append(indexCond[j].describe(session, blanks));
}
}
sb.append("]\n");
}
if (indexEndCondition != null) {
String temp = indexEndCondition.describe(session, blanks);
sb.append(b).append("end condition=[").append(temp).append("]\n");
}
}
if (nonIndexCondition != null) {
String temp = nonIndexCondition.describe(session, blanks);
sb.append(b).append("other condition=[").append(temp).append("]\n");
}
return sb.toString();
}
void dropIndexFromRows(Index primaryIndex, Index oldIndex) {
RowIterator it = primaryIndex.firstRow(this, false);
int position = oldIndex.getPosition() - 1;
while (it.hasNext()) {
Row row = it.getNextRow();
int i = position - 1;
NodeAVL backnode = ((RowAVL) row).getNode(0);
while (i-- > 0) {
backnode = backnode.nNext;
}
backnode.nNext = backnode.nNext.nNext;
}
}
public CachedObject getAccessor(Index key) {
NodeAVL node = (NodeAVL) accessorList[key.getPosition()];
if (node == null) {
return null;
}
if (!node.isInMemory()) {
RowAVL row = (RowAVL) get(node.getPos(), false);
node = row.getNode(key.getPosition());
accessorList[key.getPosition()] = node;
}
return node;
}
/** Constructor declaration for PK and UNIQUE */
public Constraint(HsqlName name, Table t, Index index, int type) {
core = new ConstraintCore();
this.name = name;
constType = type;
core.mainTable = t;
core.mainIndex = index;
core.mainCols = index.getColumns();
}
boolean insertIndexNodes(Index primaryIndex, Index newIndex) {
int position = newIndex.getPosition();
RowIterator it = primaryIndex.firstRow(this, false);
int rowCount = 0;
HsqlException error = null;
try {
while (it.hasNext()) {
Row row = it.getNextRow();
((RowAVL) row).insertNode(position);
// count before inserting
rowCount++;
newIndex.insert(null, this, row);
}
return true;
} catch (java.lang.OutOfMemoryError e) {
error = Error.error(ErrorCode.OUT_OF_MEMORY);
} catch (HsqlException e) {
error = e;
}
// backtrack on error
// rowCount rows have been modified
it = primaryIndex.firstRow(this, false);
for (int i = 0; i < rowCount; i++) {
Row row = it.getNextRow();
NodeAVL backnode = ((RowAVL) row).getNode(0);
int j = position;
while (--j > 0) {
backnode = backnode.nNext;
}
backnode.nNext = backnode.nNext.nNext;
}
throw error;
}
public CachedObject getAccessor(Index key) {
int position = key.getPosition();
if (position >= accessorList.length) {
throw Error.runtimeError(ErrorCode.U_S0500, "RowStoreAVL");
}
return accessorList[position];
}
boolean addToIndexConditions(Expression e) {
if (opType == OpTypes.EQUAL || opType == OpTypes.IS_NULL) {
if (indexedColumnCount < rangeIndex.getColumnCount()) {
if (rangeIndex.getColumns()[indexedColumnCount] == e.getLeftNode().getColumnIndex()) {
indexCond[indexedColumnCount] = e;
indexedColumnCount++;
opType = e.opType;
opTypeEnd = OpTypes.MAX;
return true;
}
}
}
return false;
}
/**
* Check used before creating a new foreign key cosntraint, this method checks all rows of a table
* to ensure they all have a corresponding row in the main table.
*/
void checkReferencedRows(Session session, Table table, int[] rowColArray) {
Index mainIndex = getMainIndex();
PersistentStore store = session.sessionData.getRowStore(table);
RowIterator it = table.rowIterator(session);
while (true) {
Row row = it.getNextRow();
if (row == null) {
break;
}
Object[] rowData = row.getData();
if (ArrayUtil.hasNull(rowData, rowColArray)) {
if (core.matchType == OpTypes.MATCH_SIMPLE) {
continue;
}
} else if (mainIndex.exists(session, store, rowData, rowColArray)) {
continue;
}
if (ArrayUtil.hasAllNull(rowData, rowColArray)) {
continue;
}
String colValues = "";
for (int i = 0; i < rowColArray.length; i++) {
Object o = rowData[rowColArray[i]];
colValues += table.getColumnTypes()[i].convertToString(o);
colValues += ",";
}
String[] info = new String[] {getName().name, getMain().getName().name};
throw Error.error(ErrorCode.X_23502, ErrorCode.CONSTRAINT, info);
}
}
public void setAccessor(Index key, int accessor) {
CachedObject object = get(accessor, false);
if (object != null) {
NodeAVL node = ((RowAVL) object).getNode(key.getPosition());
object = node;
}
setAccessor(key, object);
}
/** for result tables */
void reindex(Session session, Index index) {
setAccessor(index, null);
RowIterator it = table.rowIterator(this);
while (it.hasNext()) {
Row row = it.getNextRow();
// may need to clear the node before insert
index.insert(session, this, row);
}
}
public Constraint(
HsqlNameManager.HsqlName paramHsqlName, Table paramTable, Index paramIndex, int paramInt) {
this.name = paramHsqlName;
this.constType = paramInt;
this.core = new ConstraintCore();
this.core.mainTable = paramTable;
this.core.mainIndex = paramIndex;
this.core.mainCols = paramIndex.getColumns();
for (int i = 0; i < this.core.mainCols.length; i++) {
Type localType = paramTable.getColumn(this.core.mainCols[i]).getDataType();
if (localType.isLobType()) throw Error.error(5534);
}
}
private boolean addToIndexEndConditions(Expression e) {
if (opType == OpTypes.EQUAL || opType == OpTypes.IS_NULL) {
if (indexedColumnCount < rangeIndex.getColumnCount()) {
if (rangeIndex.getColumns()[indexedColumnCount] == e.getLeftNode().getColumnIndex()) {
Expression condition = ExpressionLogical.newNotNullCondition(e.getLeftNode());
indexCond[indexedColumnCount] = condition;
indexEndCond[indexedColumnCount] = e;
indexEndCondition = ExpressionLogical.andExpressions(indexEndCondition, e);
opType = OpTypes.NOT;
opTypes[indexedColumnCount] = OpTypes.NOT;
opTypeEnd = e.opType;
opTypesEnd[indexedColumnCount] = e.opType;
indexedColumnCount++;
return true;
}
}
}
return false;
}
public void setAccessor(Index key, CachedObject accessor) {
Index index = (Index) key;
accessorList[index.getPosition()] = accessor;
}
/**
* @param exprList list of expressions
* @param index Index to use
* @param colCount number of columns searched
*/
void addIndexCondition(Expression[] exprList, Index index, int colCount) {
int indexColCount = index.getColumnCount();
rangeIndex = index;
indexCond = new Expression[indexColCount];
indexEndCond = new Expression[indexColCount];
opTypes = new int[indexColCount];
opTypesEnd = new int[indexColCount];
opType = exprList[0].opType;
opTypes[0] = exprList[0].opType;
switch (opType) {
case OpTypes.NOT:
indexCond = exprList;
opTypeEnd = OpTypes.MAX;
opTypesEnd[0] = OpTypes.MAX;
break;
case OpTypes.GREATER:
case OpTypes.GREATER_EQUAL:
case OpTypes.GREATER_EQUAL_PRE:
indexCond = exprList;
if (exprList[0].getType() == OpTypes.GREATER_EQUAL_PRE) {
indexEndCond[0] = indexEndCondition = exprList[0].nodes[2];
}
opTypeEnd = OpTypes.MAX;
opTypesEnd[0] = OpTypes.MAX;
break;
case OpTypes.SMALLER:
case OpTypes.SMALLER_EQUAL:
{
Expression e = exprList[0].getLeftNode();
e = new ExpressionLogical(OpTypes.IS_NULL, e);
e = new ExpressionLogical(OpTypes.NOT, e);
indexCond[0] = e;
indexEndCond[0] = indexEndCondition = exprList[0];
opTypeEnd = opType;
opTypesEnd[0] = opType;
opType = OpTypes.NOT;
opTypes[0] = OpTypes.NOT;
break;
}
case OpTypes.IS_NULL:
case OpTypes.EQUAL:
{
indexCond = exprList;
for (int i = 0; i < colCount; i++) {
Expression e = exprList[i];
indexEndCond[i] = e;
indexEndCondition = ExpressionLogical.andExpressions(indexEndCondition, e);
opType = e.opType;
opTypes[0] = e.opType;
opTypesEnd[0] = e.opType;
}
opTypeEnd = opType;
break;
}
default:
Error.runtimeError(ErrorCode.U_S0500, "RangeVariable");
}
indexedColumnCount = colCount;
hasIndex = true;
}
void addCondition(Expression e) {
if (e == null) {
return;
}
if (e instanceof ExpressionLogical) {
if (((ExpressionLogical) e).isTerminal) {
terminalCondition = e;
}
}
nonIndexCondition = ExpressionLogical.andExpressions(nonIndexCondition, e);
if (Expression.EXPR_FALSE.equals(nonIndexCondition)) {
isFalse = true;
}
if (rangeIndex == null || rangeIndex.getColumnCount() == 0) {
return;
}
if (indexedColumnCount == 0) {
return;
}
if (e.getIndexableExpression(rangeVar) == null) {
return;
}
int colIndex = e.getLeftNode().getColumnIndex();
int[] indexCols = rangeIndex.getColumns();
switch (e.getType()) {
case OpTypes.GREATER:
case OpTypes.GREATER_EQUAL:
case OpTypes.GREATER_EQUAL_PRE:
{
// replaces existing condition
if (opType == OpTypes.NOT) {
if (indexCols[indexedColumnCount - 1] == colIndex) {
nonIndexCondition =
ExpressionLogical.andExpressions(
nonIndexCondition, indexCond[indexedColumnCount - 1]);
indexCond[indexedColumnCount - 1] = e;
opType = e.opType;
opTypes[indexedColumnCount - 1] = e.opType;
if (e.getType() == OpTypes.GREATER_EQUAL_PRE && indexedColumnCount == 1) {
indexEndCond[indexedColumnCount - 1] =
ExpressionLogical.andExpressions(
indexEndCond[indexedColumnCount - 1], e.nodes[2]);
}
}
} else {
addToIndexConditions(e);
}
break;
}
case OpTypes.SMALLER:
case OpTypes.SMALLER_EQUAL:
{
if (opType == OpTypes.GREATER
|| opType == OpTypes.GREATER_EQUAL
|| opType == OpTypes.GREATER_EQUAL_PRE
|| opType == OpTypes.NOT) {
if (opTypeEnd != OpTypes.MAX) {
break;
}
if (indexCols[indexedColumnCount - 1] == colIndex) {
indexEndCond[indexedColumnCount - 1] = e;
indexEndCondition = ExpressionLogical.andExpressions(indexEndCondition, e);
opTypeEnd = e.opType;
opTypesEnd[indexedColumnCount - 1] = e.opType;
}
} else {
addToIndexEndConditions(e);
}
break;
}
default:
}
}
