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|
/*
* Copyright 2004-2011 H2 Group.
* Copyright 2011 James Moger.
* Copyright 2012 Frédéric Gaillard.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.iciql;
import com.iciql.Iciql.*;
import com.iciql.util.IciqlLogger;
import com.iciql.util.StatementBuilder;
import com.iciql.util.StringUtils;
import com.iciql.util.Utils;
import java.lang.reflect.Field;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.IdentityHashMap;
import java.util.LinkedHashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
/**
* A table definition contains the index definitions of a table, the field
* definitions, the table name, and other meta data.
*
* @param <T> the table type
*/
public class TableDefinition<T> {
/**
* The meta data of an index.
*/
public static class IndexDefinition {
public IndexType type;
public String indexName;
public List<String> columnNames;
}
/**
* The meta data of a constraint on foreign key.
*/
public static class ConstraintForeignKeyDefinition {
public String constraintName;
public List<String> foreignColumns;
public String referenceTable;
public List<String> referenceColumns;
public ConstraintDeleteType deleteType = ConstraintDeleteType.UNSET;
public ConstraintUpdateType updateType = ConstraintUpdateType.UNSET;
public ConstraintDeferrabilityType deferrabilityType = ConstraintDeferrabilityType.UNSET;
}
/**
* The meta data of a unique constraint.
*/
public static class ConstraintUniqueDefinition {
public String constraintName;
public List<String> uniqueColumns;
}
/**
* The meta data of a field.
*/
static class FieldDefinition {
String columnName;
Field field;
String dataType;
int length;
int scale;
boolean isPrimaryKey;
boolean isAutoIncrement;
boolean trim;
boolean nullable;
String defaultValue;
EnumType enumType;
Class<?> enumTypeClass;
boolean isPrimitive;
String constraint;
Class<? extends DataTypeAdapter<?>> typeAdapter;
Object getValue(Object obj) {
try {
return field.get(obj);
} catch (Exception e) {
throw new IciqlException(e);
}
}
private Object initWithNewObject(Object obj) {
Object o = Utils.newObject(field.getType());
setValue(obj, o);
return o;
}
private void setValue(Object obj, Object o) {
try {
if (!field.isAccessible()) {
field.setAccessible(true);
}
if (field.getType().isPrimitive() && o == null) {
// do not attempt to set a primitive to null
return;
}
field.set(obj, o);
} catch (IciqlException e) {
throw e;
} catch (Exception e) {
throw new IciqlException(e);
}
}
@Override
public int hashCode() {
return columnName.hashCode();
}
@Override
public boolean equals(Object o) {
if (o instanceof FieldDefinition) {
return o.hashCode() == hashCode();
}
return false;
}
}
public ArrayList<FieldDefinition> fields = Utils.newArrayList();
String schemaName;
String tableName;
String viewTableName;
int tableVersion;
List<String> primaryKeyColumnNames;
boolean memoryTable;
boolean multiplePrimitiveBools;
private boolean createIfRequired = true;
private Class<T> clazz;
private IdentityHashMap<Object, FieldDefinition> fieldMap = Utils.newIdentityHashMap();
private ArrayList<IndexDefinition> indexes = Utils.newArrayList();
ArrayList<ConstraintForeignKeyDefinition> constraintsForeignKey = Utils.newArrayList();
ArrayList<ConstraintUniqueDefinition> constraintsUnique = Utils.newArrayList();
TableDefinition(Class<T> clazz) {
this.clazz = clazz;
schemaName = null;
tableName = clazz.getSimpleName();
}
Class<T> getModelClass() {
return clazz;
}
List<FieldDefinition> getFields() {
return fields;
}
void defineSchemaName(String schemaName) {
this.schemaName = schemaName;
}
void defineTableName(String tableName) {
this.tableName = tableName;
}
void defineViewTableName(String viewTableName) {
this.viewTableName = viewTableName;
}
void defineMemoryTable() {
this.memoryTable = true;
}
void defineSkipCreate() {
this.createIfRequired = false;
}
/**
* Define a primary key by the specified model fields.
*
* @param modelFields the ordered list of model fields
*/
void definePrimaryKey(Object[] modelFields) {
List<String> columnNames = mapColumnNames(modelFields);
setPrimaryKey(columnNames);
}
/**
* Define a primary key by the specified column names.
*
* @param columnNames the ordered list of column names
*/
private void setPrimaryKey(List<String> columnNames) {
primaryKeyColumnNames = Utils.newArrayList(columnNames);
List<String> pkNames = Utils.newArrayList();
for (String name : columnNames) {
pkNames.add(name.toLowerCase());
}
// set isPrimaryKey flag for all field definitions
for (FieldDefinition fieldDefinition : fieldMap.values()) {
fieldDefinition.isPrimaryKey = pkNames.contains(fieldDefinition.columnName.toLowerCase());
}
}
private <A> String getColumnName(A fieldObject) {
FieldDefinition def = fieldMap.get(fieldObject);
return def == null ? null : def.columnName;
}
private ArrayList<String> mapColumnNames(Object[] columns) {
ArrayList<String> columnNames = Utils.newArrayList();
for (Object column : columns) {
columnNames.add(getColumnName(column));
}
return columnNames;
}
/**
* Defines an index with the specified model fields.
*
* @param name the index name (optional)
* @param type the index type (STANDARD, HASH, UNIQUE, UNIQUE_HASH)
* @param modelFields the ordered list of model fields
*/
void defineIndex(String name, IndexType type, Object[] modelFields) {
List<String> columnNames = mapColumnNames(modelFields);
addIndex(name, type, columnNames);
}
/**
* Defines an index with the specified column names.
*
* @param type the index type (STANDARD, HASH, UNIQUE, UNIQUE_HASH)
* @param columnNames the ordered list of column names
*/
private void addIndex(String name, IndexType type, List<String> columnNames) {
IndexDefinition index = new IndexDefinition();
if (StringUtils.isNullOrEmpty(name)) {
index.indexName = tableName + "_idx_" + indexes.size();
} else {
index.indexName = name;
}
index.columnNames = Utils.newArrayList(columnNames);
index.type = type;
indexes.add(index);
}
/**
* Defines an unique constraint with the specified model fields.
*
* @param name the constraint name (optional)
* @param modelFields the ordered list of model fields
*/
void defineConstraintUnique(String name, Object[] modelFields) {
List<String> columnNames = mapColumnNames(modelFields);
addConstraintUnique(name, columnNames);
}
/**
* Defines an unique constraint.
*
* @param name
* @param columnNames
*/
private void addConstraintUnique(String name, List<String> columnNames) {
ConstraintUniqueDefinition constraint = new ConstraintUniqueDefinition();
if (StringUtils.isNullOrEmpty(name)) {
constraint.constraintName = tableName + "_unique_" + constraintsUnique.size();
} else {
constraint.constraintName = name;
}
constraint.uniqueColumns = Utils.newArrayList(columnNames);
constraintsUnique.add(constraint);
}
/**
* Defines a foreign key constraint with the specified model fields.
*
* @param name the constraint name (optional)
* @param modelFields the ordered list of model fields
*/
void defineForeignKey(String name, Object[] modelFields, String refTableName, Object[] refModelFields,
ConstraintDeleteType deleteType, ConstraintUpdateType updateType,
ConstraintDeferrabilityType deferrabilityType) {
List<String> columnNames = mapColumnNames(modelFields);
List<String> referenceColumnNames = mapColumnNames(refModelFields);
addConstraintForeignKey(name, columnNames, refTableName, referenceColumnNames,
deleteType, updateType, deferrabilityType);
}
void defineColumnName(Object column, String columnName) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.columnName = columnName;
}
}
void defineAutoIncrement(Object column) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.isAutoIncrement = true;
}
}
void defineLength(Object column, int length) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.length = length;
}
}
void defineScale(Object column, int scale) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.scale = scale;
}
}
void defineTrim(Object column) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.trim = true;
}
}
void defineNullable(Object column, boolean isNullable) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.nullable = isNullable;
}
}
void defineDefaultValue(Object column, String defaultValue) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.defaultValue = defaultValue;
}
}
void defineConstraint(Object column, String constraint) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.constraint = constraint;
}
}
void defineTypeAdapter(Object column, Class<? extends DataTypeAdapter<?>> typeAdapter) {
FieldDefinition def = fieldMap.get(column);
if (def != null) {
def.typeAdapter = typeAdapter;
}
}
void mapFields(Db db) {
boolean byAnnotationsOnly = false;
boolean inheritColumns = false;
if (clazz.isAnnotationPresent(IQTable.class)) {
IQTable tableAnnotation = clazz.getAnnotation(IQTable.class);
byAnnotationsOnly = tableAnnotation.annotationsOnly();
inheritColumns = tableAnnotation.inheritColumns();
}
if (clazz.isAnnotationPresent(IQView.class)) {
IQView viewAnnotation = clazz.getAnnotation(IQView.class);
byAnnotationsOnly = viewAnnotation.annotationsOnly();
inheritColumns = viewAnnotation.inheritColumns();
}
List<Field> classFields = classFields(inheritColumns);
Set<FieldDefinition> uniqueFields = new LinkedHashSet<FieldDefinition>();
T defaultObject = Db.instance(clazz);
for (Field f : classFields) {
// check if we should skip this field
if (f.isAnnotationPresent(IQIgnore.class)) {
continue;
}
// default to field name
String columnName = f.getName();
boolean isAutoIncrement = false;
boolean isPrimaryKey = false;
int length = 0;
int scale = 0;
boolean trim = false;
boolean nullable = !f.getType().isPrimitive();
String defaultValue = "";
String constraint = "";
String dataType = null;
Class<? extends DataTypeAdapter<?>> typeAdapter = null;
// configure Java -> SQL enum mapping
EnumType enumType = Utils.getEnumType(f);
Class<?> enumTypeClass = Utils.getEnumTypeClass(f);
// try using default object
try {
f.setAccessible(true);
Object value = f.get(defaultObject);
if (value != null) {
if (value.getClass().isEnum()) {
// enum default, convert to target type
Enum<?> anEnum = (Enum<?>) value;
Object o = Utils.convertEnum(anEnum, enumType);
defaultValue = ModelUtils.formatDefaultValue(o);
} else {
// object default
defaultValue = ModelUtils.formatDefaultValue(value);
}
}
} catch (IllegalAccessException e) {
throw new IciqlException(e, "failed to get default object for {0}", columnName);
}
// identify the type adapter
typeAdapter = Utils.getDataTypeAdapter(f.getAnnotations());
if (typeAdapter == null) {
typeAdapter = Utils.getDataTypeAdapter(f.getType().getAnnotations());
}
if (typeAdapter != null) {
DataTypeAdapter<?> dtt = db.getDialect().getAdapter(typeAdapter);
dataType = dtt.getDataType();
}
boolean hasAnnotation = f.isAnnotationPresent(IQColumn.class);
if (hasAnnotation) {
IQColumn col = f.getAnnotation(IQColumn.class);
if (!StringUtils.isNullOrEmpty(col.name())) {
columnName = col.name();
}
isAutoIncrement = col.autoIncrement();
isPrimaryKey = col.primaryKey();
length = col.length();
scale = col.scale();
trim = col.trim();
nullable = col.nullable();
// annotation overrides
if (!StringUtils.isNullOrEmpty(col.defaultValue())) {
defaultValue = col.defaultValue();
}
}
boolean hasConstraint = f.isAnnotationPresent(IQConstraint.class);
if (hasConstraint) {
IQConstraint con = f.getAnnotation(IQConstraint.class);
// annotation overrides
if (!StringUtils.isNullOrEmpty(con.value())) {
constraint = con.value();
}
}
boolean reflectiveMatch = !byAnnotationsOnly;
if (reflectiveMatch || hasAnnotation || hasConstraint) {
FieldDefinition fieldDef = new FieldDefinition();
fieldDef.isPrimitive = f.getType().isPrimitive();
fieldDef.field = f;
fieldDef.columnName = columnName;
fieldDef.isAutoIncrement = isAutoIncrement;
fieldDef.isPrimaryKey = isPrimaryKey;
fieldDef.length = length;
fieldDef.scale = scale;
fieldDef.trim = trim;
fieldDef.nullable = nullable;
fieldDef.defaultValue = defaultValue;
fieldDef.enumType = enumType;
fieldDef.enumTypeClass = enumTypeClass;
fieldDef.dataType = StringUtils.isNullOrEmpty(dataType) ? ModelUtils.getDataType(fieldDef) : dataType;
fieldDef.typeAdapter = typeAdapter;
fieldDef.constraint = constraint;
uniqueFields.add(fieldDef);
}
}
fields.addAll(uniqueFields);
List<String> primaryKey = Utils.newArrayList();
int primitiveBoolean = 0;
for (FieldDefinition fieldDef : fields) {
if (fieldDef.isPrimaryKey) {
primaryKey.add(fieldDef.columnName);
}
if (fieldDef.isPrimitive && fieldDef.field.getType().equals(boolean.class)) {
primitiveBoolean++;
}
}
if (primitiveBoolean > 1) {
multiplePrimitiveBools = true;
IciqlLogger
.warn("Model {0} has multiple primitive booleans! Possible where,set,join clause problem!", tableName);
}
if (primaryKey.size() > 0) {
setPrimaryKey(primaryKey);
}
}
private List<Field> classFields(boolean inheritColumns) {
List<Field> classFields = Utils.newArrayList();
classFields.addAll(Arrays.asList(clazz.getDeclaredFields()));
Class<?> superClass = clazz;
while (inheritColumns) {
superClass = superClass.getSuperclass();
classFields.addAll(Arrays.asList(superClass.getDeclaredFields()));
if (superClass.isAnnotationPresent(IQView.class)) {
IQView superView = superClass.getAnnotation(IQView.class);
inheritColumns = superView.inheritColumns();
} else if (superClass.isAnnotationPresent(IQTable.class)) {
IQTable superTable = superClass.getAnnotation(IQTable.class);
inheritColumns = superTable.inheritColumns();
} else {
inheritColumns = false;
}
}
return classFields;
}
void checkMultipleBooleans() {
if (multiplePrimitiveBools) {
throw new IciqlException(
"Can not explicitly reference a primitive boolean if there are multiple boolean fields in your model class!");
}
}
void checkMultipleEnums(Object o) {
if (o == null) {
return;
}
Class<?> clazz = o.getClass();
if (!clazz.isEnum()) {
return;
}
int fieldCount = 0;
for (FieldDefinition fieldDef : fields) {
Class<?> targetType = fieldDef.field.getType();
if (clazz.equals(targetType)) {
fieldCount++;
}
}
if (fieldCount > 1) {
throw new IciqlException(
"Can not explicitly reference {0} because there are {1} {0} fields in your model class!",
clazz.getSimpleName(), fieldCount);
}
}
/**
* Optionally truncates strings to the maximum length and converts
* java.lang.Enum types to Strings or Integers.
*/
Object getValue(Object obj, FieldDefinition field) {
Object value = field.getValue(obj);
if (value == null) {
return value;
}
if (field.enumType != null) {
// convert enumeration to INT or STRING
Enum<?> iqenum = (Enum<?>) value;
switch (field.enumType) {
case NAME:
if (field.trim && field.length > 0) {
if (iqenum.name().length() > field.length) {
return iqenum.name().substring(0, field.length);
}
}
return iqenum.name();
case ORDINAL:
return iqenum.ordinal();
case ENUMID:
if (!EnumId.class.isAssignableFrom(value.getClass())) {
throw new IciqlException(field.field.getName() + " does not implement EnumId!");
}
EnumId<?> enumid = (EnumId<?>) value;
return enumid.enumId();
}
}
if (field.trim && field.length > 0) {
if (value instanceof String) {
// clip strings
String s = (String) value;
if (s.length() > field.length) {
return s.substring(0, field.length);
}
return s;
}
return value;
}
// return the value unchanged
return value;
}
PreparedStatement createInsertStatement(Db db, Object obj, boolean returnKey) {
SQLStatement stat = new SQLStatement(db);
StatementBuilder buff = new StatementBuilder("INSERT INTO ");
buff.append(db.getDialect().prepareTableName(schemaName, tableName)).append('(');
for (FieldDefinition field : fields) {
if (skipInsertField(field, obj)) {
continue;
}
buff.appendExceptFirst(", ");
buff.append(db.getDialect().prepareColumnName(field.columnName));
}
buff.append(") VALUES(");
buff.resetCount();
for (FieldDefinition field : fields) {
if (skipInsertField(field, obj)) {
continue;
}
buff.appendExceptFirst(", ");
buff.append('?');
Object value = getValue(obj, field);
if (value == null) {
if (!field.nullable) {
// try to interpret and instantiate a default value
value = ModelUtils.getDefaultValue(field, db.getDialect().getDateTimeClass());
}
}
Object parameter = db.getDialect().serialize(value, field.typeAdapter);
stat.addParameter(parameter);
}
buff.append(')');
stat.setSQL(buff.toString());
IciqlLogger.insert(stat.getSQL());
return stat.prepare(returnKey);
}
long insert(Db db, Object obj, boolean returnKey) {
if (!StringUtils.isNullOrEmpty(viewTableName)) {
throw new IciqlException("Iciql does not support inserting rows into views!");
}
SQLStatement stat = new SQLStatement(db);
StatementBuilder buff = new StatementBuilder("INSERT INTO ");
buff.append(db.getDialect().prepareTableName(schemaName, tableName)).append('(');
for (FieldDefinition field : fields) {
if (skipInsertField(field, obj)) {
continue;
}
buff.appendExceptFirst(", ");
buff.append(db.getDialect().prepareColumnName(field.columnName));
}
buff.append(") VALUES(");
buff.resetCount();
for (FieldDefinition field : fields) {
if (skipInsertField(field, obj)) {
continue;
}
buff.appendExceptFirst(", ");
buff.append('?');
Object value = getValue(obj, field);
if (value == null && !field.nullable) {
// try to interpret and instantiate a default value
value = ModelUtils.getDefaultValue(field, db.getDialect().getDateTimeClass());
}
Object parameter = db.getDialect().serialize(value, field.typeAdapter);
stat.addParameter(parameter);
}
buff.append(')');
stat.setSQL(buff.toString());
IciqlLogger.insert(stat.getSQL());
if (returnKey) {
return stat.executeInsert();
}
return stat.executeUpdate();
}
private boolean skipInsertField(FieldDefinition field, Object obj) {
if (field.isAutoIncrement) {
Object value = getValue(obj, field);
if (field.isPrimitive) {
// skip uninitialized primitive autoincrement values
if (value.toString().equals("0")) {
return true;
}
} else if (value == null) {
// skip null object autoincrement values
return true;
}
} else {
// conditionally skip insert of null
Object value = getValue(obj, field);
if (value == null) {
return !StringUtils.isNullOrEmpty(field.defaultValue);
}
}
return false;
}
int merge(Db db, Object obj) {
if (primaryKeyColumnNames == null || primaryKeyColumnNames.size() == 0) {
throw new IllegalStateException("No primary key columns defined for table " + obj.getClass()
+ " - no update possible");
}
SQLStatement stat = new SQLStatement(db);
db.getDialect().prepareMerge(stat, schemaName, tableName, this, obj);
IciqlLogger.merge(stat.getSQL());
return stat.executeUpdate();
}
int update(Db db, Object obj) {
if (!StringUtils.isNullOrEmpty(viewTableName)) {
throw new IciqlException("Iciql does not support updating rows in views!");
}
if (primaryKeyColumnNames == null || primaryKeyColumnNames.size() == 0) {
throw new IllegalStateException("No primary key columns defined for table " + obj.getClass()
+ " - no update possible");
}
SQLStatement stat = new SQLStatement(db);
StatementBuilder buff = new StatementBuilder("UPDATE ");
buff.append(db.getDialect().prepareTableName(schemaName, tableName)).append(" SET ");
buff.resetCount();
for (FieldDefinition field : fields) {
if (!field.isPrimaryKey) {
Object value = getValue(obj, field);
if (value == null && !field.nullable) {
// try to interpret and instantiate a default value
value = ModelUtils.getDefaultValue(field, db.getDialect().getDateTimeClass());
}
buff.appendExceptFirst(", ");
buff.append(db.getDialect().prepareColumnName(field.columnName));
buff.append(" = ?");
Object parameter = db.getDialect().serialize(value, field.typeAdapter);
stat.addParameter(parameter);
}
}
Object alias = Utils.newObject(obj.getClass());
Query<Object> query = Query.from(db, alias);
boolean firstCondition = true;
for (FieldDefinition field : fields) {
if (field.isPrimaryKey) {
Object fieldAlias = field.getValue(alias);
Object value = field.getValue(obj);
if (field.isPrimitive) {
fieldAlias = query.getPrimitiveAliasByValue(fieldAlias);
}
if (!firstCondition) {
query.addConditionToken(ConditionAndOr.AND);
}
firstCondition = false;
query.addConditionToken(new Condition<Object>(fieldAlias, value, CompareType.EQUAL));
}
}
stat.setSQL(buff.toString());
query.appendWhere(stat);
IciqlLogger.update(stat.getSQL());
return stat.executeUpdate();
}
int delete(Db db, Object obj) {
if (!StringUtils.isNullOrEmpty(viewTableName)) {
throw new IciqlException("Iciql does not support deleting rows from views!");
}
if (primaryKeyColumnNames == null || primaryKeyColumnNames.size() == 0) {
throw new IllegalStateException("No primary key columns defined for table " + obj.getClass()
+ " - no update possible");
}
SQLStatement stat = new SQLStatement(db);
StatementBuilder buff = new StatementBuilder("DELETE FROM ");
buff.append(db.getDialect().prepareTableName(schemaName, tableName));
buff.resetCount();
Object alias = Utils.newObject(obj.getClass());
Query<Object> query = Query.from(db, alias);
boolean firstCondition = true;
for (FieldDefinition field : fields) {
if (field.isPrimaryKey) {
Object fieldAlias = field.getValue(alias);
Object value = field.getValue(obj);
if (field.isPrimitive) {
fieldAlias = query.getPrimitiveAliasByValue(fieldAlias);
}
if (!firstCondition) {
query.addConditionToken(ConditionAndOr.AND);
}
firstCondition = false;
query.addConditionToken(new Condition<Object>(fieldAlias, value, CompareType.EQUAL));
}
}
stat.setSQL(buff.toString());
query.appendWhere(stat);
IciqlLogger.delete(stat.getSQL());
return stat.executeUpdate();
}
TableDefinition<T> createIfRequired(Db db) {
// globally enable/disable check of create if required
if (db.getSkipCreate()) {
return this;
}
if (!createIfRequired) {
// skip table and index creation
// but still check for upgrades
db.upgradeTable(this);
return this;
}
if (db.hasCreated(clazz)) {
return this;
}
SQLStatement stat = new SQLStatement(db);
if (StringUtils.isNullOrEmpty(viewTableName)) {
db.getDialect().prepareCreateTable(stat, this);
} else {
db.getDialect().prepareCreateView(stat, this);
}
IciqlLogger.create(stat.getSQL());
try {
stat.executeUpdate();
} catch (IciqlException e) {
if (e.getIciqlCode() != IciqlException.CODE_OBJECT_ALREADY_EXISTS) {
throw e;
}
}
// create indexes
for (IndexDefinition index : indexes) {
stat = new SQLStatement(db);
db.getDialect().prepareCreateIndex(stat, schemaName, tableName, index);
IciqlLogger.create(stat.getSQL());
try {
stat.executeUpdate();
} catch (IciqlException e) {
if (e.getIciqlCode() != IciqlException.CODE_OBJECT_ALREADY_EXISTS
&& e.getIciqlCode() != IciqlException.CODE_DUPLICATE_KEY) {
throw e;
}
}
}
// tables are created using IF NOT EXISTS
// but we may still need to upgrade
db.upgradeTable(this);
return this;
}
void mapObject(Object obj) {
fieldMap.clear();
initObject(obj, fieldMap);
if (clazz.isAnnotationPresent(IQSchema.class)) {
IQSchema schemaAnnotation = clazz.getAnnotation(IQSchema.class);
// setup schema name mapping, if properly annotated
if (!StringUtils.isNullOrEmpty(schemaAnnotation.value())) {
schemaName = schemaAnnotation.value();
}
}
if (clazz.isAnnotationPresent(IQTable.class)) {
IQTable tableAnnotation = clazz.getAnnotation(IQTable.class);
// setup table name mapping, if properly annotated
if (!StringUtils.isNullOrEmpty(tableAnnotation.name())) {
tableName = tableAnnotation.name();
}
// allow control over createTableIfRequired()
createIfRequired = tableAnnotation.create();
// model version
if (clazz.isAnnotationPresent(IQVersion.class)) {
IQVersion versionAnnotation = clazz.getAnnotation(IQVersion.class);
if (versionAnnotation.value() > 0) {
tableVersion = versionAnnotation.value();
}
}
// setup the primary index, if properly annotated
if (tableAnnotation.primaryKey().length > 0) {
List<String> primaryKey = Utils.newArrayList();
primaryKey.addAll(Arrays.asList(tableAnnotation.primaryKey()));
setPrimaryKey(primaryKey);
}
}
if (clazz.isAnnotationPresent(IQView.class)) {
IQView viewAnnotation = clazz.getAnnotation(IQView.class);
// setup view name mapping, if properly annotated
// set this as the table name so it fits in seemlessly with iciql
if (!StringUtils.isNullOrEmpty(viewAnnotation.name())) {
tableName = viewAnnotation.name();
} else {
tableName = clazz.getSimpleName();
}
// setup source table name mapping, if properly annotated
if (!StringUtils.isNullOrEmpty(viewAnnotation.tableName())) {
viewTableName = viewAnnotation.tableName();
} else {
// check for IQTable annotation on super class
Class<?> superClass = clazz.getSuperclass();
if (superClass.isAnnotationPresent(IQTable.class)) {
IQTable table = superClass.getAnnotation(IQTable.class);
if (StringUtils.isNullOrEmpty(table.name())) {
// super.SimpleClassName
viewTableName = superClass.getSimpleName();
} else {
// super.IQTable.name()
viewTableName = table.name();
}
} else if (superClass.isAnnotationPresent(IQView.class)) {
// super class is a view
IQView parentView = superClass.getAnnotation(IQView.class);
if (StringUtils.isNullOrEmpty(parentView.tableName())) {
// parent view does not define a tableName, must be inherited
Class<?> superParent = superClass.getSuperclass();
if (superParent != null && superParent.isAnnotationPresent(IQTable.class)) {
IQTable superParentTable = superParent.getAnnotation(IQTable.class);
if (StringUtils.isNullOrEmpty(superParentTable.name())) {
// super.super.SimpleClassName
viewTableName = superParent.getSimpleName();
} else {
// super.super.IQTable.name()
viewTableName = superParentTable.name();
}
}
} else {
// super.IQView.tableName()
viewTableName = parentView.tableName();
}
}
if (StringUtils.isNullOrEmpty(viewTableName)) {
// still missing view table name
throw new IciqlException("View model class \"{0}\" is missing a table name!", tableName);
}
}
// allow control over createTableIfRequired()
createIfRequired = viewAnnotation.create();
}
if (clazz.isAnnotationPresent(IQIndex.class)) {
// single table index
IQIndex index = clazz.getAnnotation(IQIndex.class);
addIndex(index);
}
if (clazz.isAnnotationPresent(IQIndexes.class)) {
// multiple table indexes
IQIndexes indexes = clazz.getAnnotation(IQIndexes.class);
for (IQIndex index : indexes.value()) {
addIndex(index);
}
}
if (clazz.isAnnotationPresent(IQContraintUnique.class)) {
// single table unique constraint
IQContraintUnique constraint = clazz.getAnnotation(IQContraintUnique.class);
addConstraintUnique(constraint);
}
if (clazz.isAnnotationPresent(IQContraintsUnique.class)) {
// multiple table unique constraints
IQContraintsUnique constraints = clazz.getAnnotation(IQContraintsUnique.class);
for (IQContraintUnique constraint : constraints.value()) {
addConstraintUnique(constraint);
}
}
if (clazz.isAnnotationPresent(IQContraintForeignKey.class)) {
// single table constraint
IQContraintForeignKey constraint = clazz.getAnnotation(IQContraintForeignKey.class);
addConstraintForeignKey(constraint);
}
if (clazz.isAnnotationPresent(IQContraintsForeignKey.class)) {
// multiple table constraints
IQContraintsForeignKey constraints = clazz.getAnnotation(IQContraintsForeignKey.class);
for (IQContraintForeignKey constraint : constraints.value()) {
addConstraintForeignKey(constraint);
}
}
}
private void addConstraintForeignKey(IQContraintForeignKey constraint) {
List<String> foreignColumns = Arrays.asList(constraint.foreignColumns());
List<String> referenceColumns = Arrays.asList(constraint.referenceColumns());
addConstraintForeignKey(constraint.name(), foreignColumns, constraint.referenceName(), referenceColumns, constraint.deleteType(), constraint.updateType(), constraint.deferrabilityType());
}
private void addConstraintUnique(IQContraintUnique constraint) {
List<String> uniqueColumns = Arrays.asList(constraint.uniqueColumns());
addConstraintUnique(constraint.name(), uniqueColumns);
}
/**
* Defines a foreign key constraint with the specified parameters.
*
* @param name name of the constraint
* @param foreignColumns list of columns declared as foreign
* @param referenceName reference table name
* @param referenceColumns list of columns used in reference table
* @param deleteType action on delete
* @param updateType action on update
* @param deferrabilityType deferrability mode
*/
private void addConstraintForeignKey(String name,
List<String> foreignColumns, String referenceName,
List<String> referenceColumns, ConstraintDeleteType deleteType,
ConstraintUpdateType updateType, ConstraintDeferrabilityType deferrabilityType) {
ConstraintForeignKeyDefinition constraint = new ConstraintForeignKeyDefinition();
if (StringUtils.isNullOrEmpty(name)) {
constraint.constraintName = tableName + "_fkey_" + constraintsForeignKey.size();
} else {
constraint.constraintName = name;
}
constraint.foreignColumns = Utils.newArrayList(foreignColumns);
constraint.referenceColumns = Utils.newArrayList(referenceColumns);
constraint.referenceTable = referenceName;
constraint.deleteType = deleteType;
constraint.updateType = updateType;
constraint.deferrabilityType = deferrabilityType;
constraintsForeignKey.add(constraint);
}
private void addIndex(IQIndex index) {
List<String> columns = Arrays.asList(index.value());
addIndex(index.name(), index.type(), columns);
}
List<IndexDefinition> getIndexes() {
return indexes;
}
List<ConstraintUniqueDefinition> getContraintsUnique() {
return constraintsUnique;
}
List<ConstraintForeignKeyDefinition> getContraintsForeignKey() {
return constraintsForeignKey;
}
private void initObject(Object obj, Map<Object, FieldDefinition> map) {
for (FieldDefinition def : fields) {
Object newValue = def.initWithNewObject(obj);
map.put(newValue, def);
}
}
void initSelectObject(SelectTable<T> table, Object obj, Map<Object, SelectColumn<T>> map, boolean reuse) {
for (FieldDefinition def : fields) {
Object value;
if (!reuse) {
value = def.initWithNewObject(obj);
} else {
value = def.getValue(obj);
}
SelectColumn<T> column = new SelectColumn<T>(table, def);
map.put(value, column);
}
}
/**
* Most queries executed by iciql have named select lists (select alpha,
* beta where...) but sometimes a wildcard select is executed (select *).
* When a wildcard query is executed on a table that has more columns than
* are mapped in your model object, this creates a column mapping issue.
* JaQu assumed that you can always use the integer index of the
* reflectively mapped field definition to determine position in the result
* set.
* <p>
* This is not always true.
* <p>
* iciql identifies when a select * query is executed and maps column names
* to a column index from the result set. If the select statement is
* explicit, then the standard assumed column index is used instead.
*
* @param rs
* @return
*/
int[] mapColumns(SQLDialect dialect, boolean wildcardSelect, ResultSet rs) {
int[] columns = new int[fields.size()];
for (int i = 0; i < fields.size(); i++) {
try {
FieldDefinition def = fields.get(i);
int columnIndex;
if (wildcardSelect) {
// select *
// create column index by field name
columnIndex = rs.findColumn(dialect.extractColumnName(def.columnName));
} else {
// select alpha, beta, gamma, etc
// explicit select order
columnIndex = i + 1;
}
columns[i] = columnIndex;
} catch (SQLException s) {
throw new IciqlException(s);
}
}
return columns;
}
void readRow(SQLDialect dialect, Object item, ResultSet rs, int[] columns) {
for (int i = 0; i < fields.size(); i++) {
FieldDefinition def = fields.get(i);
Class<?> targetType = def.field.getType();
Object o;
if (targetType.isEnum()) {
Object obj;
try {
obj = rs.getObject(columns[i]);
} catch (SQLException e) {
throw new IciqlException(e);
}
o = Utils.convertEnum(obj, targetType, def.enumType);
} else {
o = dialect.deserialize(rs, columns[i], targetType, def.typeAdapter);
}
def.setValue(item, o);
}
}
void appendSelectList(SQLStatement stat) {
for (int i = 0; i < fields.size(); i++) {
if (i > 0) {
stat.appendSQL(", ");
}
FieldDefinition def = fields.get(i);
stat.appendColumn(def.columnName);
}
}
void appendSelectList(SQLStatement stat, String as) {
for (int i = 0; i < fields.size(); i++) {
if (i > 0) {
stat.appendSQL(", ");
}
stat.appendSQL(as + ".");
FieldDefinition def = fields.get(i);
stat.appendColumn(def.columnName);
}
}
<Y, X> void appendSelectList(SQLStatement stat, Query<Y> query, X x) {
// select t0.col1, t0.col2, t0.col3...
// select table1.col1, table1.col2, table1.col3...
String selectDot = "";
SelectTable<?> sel = query.getSelectTable(x);
if (sel != null) {
if (query.isJoin()) {
selectDot = sel.getAs() + ".";
} else {
String sn = sel.getAliasDefinition().schemaName;
String tn = sel.getAliasDefinition().tableName;
selectDot = query.getDb().getDialect().prepareTableName(sn, tn) + ".";
}
}
for (int i = 0; i < fields.size(); i++) {
if (i > 0) {
stat.appendSQL(", ");
}
stat.appendSQL(selectDot);
FieldDefinition def = fields.get(i);
if (def.isPrimitive) {
Object obj = def.getValue(x);
Object alias = query.getPrimitiveAliasByValue(obj);
query.appendSQL(stat, x, alias);
} else {
Object obj = def.getValue(x);
query.appendSQL(stat, x, obj);
}
}
}
}
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