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#149 Implemented friendly names

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SVN:trunk[1057]
This commit is contained in:
Romain Quetiez
2011-01-26 09:43:35 +00:00
parent cb0610bf0b
commit 1a52f4de72
20 changed files with 1244 additions and 795 deletions
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190
core/expression.class.inc.php
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@@ -30,6 +30,7 @@ class MissingQueryArgument extends CoreException
abstract class Expression
{
// recursive translation of identifiers
abstract public function GetUnresolvedFields($sAlias, &$aUnresolved);
abstract public function Translate($aTranslationData, $bMatchAll = true);
// recursive rendering (aArgs used as input by default, or used as output if bRetrofitParams set to True
@@ -66,6 +67,12 @@ abstract class Expression
return $oExpression;
}
static public function FromSQL($sSQL)
{
$oSql = new SQLExpression($sSQL);
return $oSql;
}
public function LogAnd($oExpr)
{
if ($this->IsTrue()) return clone $oExpr;
@@ -79,6 +86,42 @@ abstract class Expression
}
}
class SQLExpression extends Expression
{
protected $m_sSQL;
public function __construct($sSQL)
{
$this->m_sSQL = $sSQL;
}
public function IsTrue()
{
return false;
}
// recursive rendering
public function Render(&$aArgs = null, $bRetrofitParams = false)
{
return $this->m_sSQL;
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
}
public function Translate($aTranslationData, $bMatchAll = true)
{
return clone $this;
}
public function ListRequiredFields()
{
return array();
}
}
class BinaryExpression extends Expression
{
@@ -143,6 +186,12 @@ class BinaryExpression extends Expression
return "($sLeft $sOperator $sRight)";
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
$this->GetLeftExpr()->GetUnresolvedFields($sAlias, $aUnresolved);
$this->GetRightExpr()->GetUnresolvedFields($sAlias, $aUnresolved);
}
public function Translate($aTranslationData, $bMatchAll = true)
{
$oLeft = $this->GetLeftExpr()->Translate($aTranslationData, $bMatchAll);
@@ -194,6 +243,10 @@ class UnaryExpression extends Expression
}
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
}
public function Translate($aTranslationData, $bMatchAll = true)
{
return clone $this;
@@ -275,6 +328,20 @@ class FieldExpression extends UnaryExpression
return "`{$this->m_sParent}`.`{$this->m_sName}`";
}
public function ListRequiredFields()
{
return array($this->m_sParent.'.'.$this->m_sName);
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
if ($this->m_sParent == $sAlias)
{
// Add a reference to the field
$aUnresolved[$this->m_sName] = $this;
}
}
public function Translate($aTranslationData, $bMatchAll = true)
{
if (!array_key_exists($this->m_sParent, $aTranslationData))
@@ -292,21 +359,28 @@ class FieldExpression extends UnaryExpression
}
$sNewParent = $aTranslationData[$this->m_sParent]['*'];
$sNewName = $this->m_sName;
$oRet = new FieldExpressionResolved($sNewName, $sNewParent);
}
else
{
$sNewParent = $aTranslationData[$this->m_sParent][$this->m_sName][0];
$sNewName = $aTranslationData[$this->m_sParent][$this->m_sName][1];
$oRet = $aTranslationData[$this->m_sParent][$this->m_sName];
}
return new FieldExpression($sNewName, $sNewParent);
}
public function ListRequiredFields()
{
return array($this->m_sParent.'.'.$this->m_sName);
return $oRet;
}
}
// Has been resolved into an SQL expression
class FieldExpressionResolved extends FieldExpression
{
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
}
public function Translate($aTranslationData, $bMatchAll = true)
{
return clone $this;
}
}
class VariableExpression extends UnaryExpression
{
@@ -393,6 +467,14 @@ class ListExpression extends Expression
return '('.implode(', ', $aRes).')';
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
foreach ($this->m_aExpressions as $oExpr)
{
$oExpr->GetUnresolvedFields($sAlias, $aUnresolved);
}
}
public function Translate($aTranslationData, $bMatchAll = true)
{
$aRes = array();
@@ -453,6 +535,14 @@ class FunctionExpression extends Expression
return $this->m_sVerb.'('.implode(', ', $aRes).')';
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
foreach ($this->m_aArgs as $oExpr)
{
$oExpr->GetUnresolvedFields($sAlias, $aUnresolved);
}
}
public function Translate($aTranslationData, $bMatchAll = true)
{
$aRes = array();
@@ -507,6 +597,11 @@ class IntervalExpression extends Expression
return 'INTERVAL '.$this->m_oValue->Render($aArgs, $bRetrofitParams).' '.$this->m_sUnit;
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
$this->m_oValue->GetUnresolvedFields($sAlias, $aUnresolved);
}
public function Translate($aTranslationData, $bMatchAll = true)
{
return new IntervalExpression($this->m_oValue->Translate($aTranslationData, $bMatchAll), $this->m_sUnit);
@@ -551,6 +646,14 @@ class CharConcatExpression extends Expression
return "CAST(CONCAT(".implode(', ', $aRes).") AS CHAR)";
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
foreach ($this->m_aExpressions as $oExpr)
{
$oExpr->GetUnresolvedFields($sAlias, $aUnresolved);
}
}
public function Translate($aTranslationData, $bMatchAll = true)
{
$aRes = array();
@@ -572,4 +675,75 @@ class CharConcatExpression extends Expression
}
}
class QueryBuilderExpressions
{
protected $m_oConditionExpr;
protected $m_aSelectExpr;
protected $m_aJoinFields;
public function __construct($aSelect, $oCondition)
{
$this->m_oConditionExpr = $oCondition;
$this->m_aSelectExpr = $aSelect;
$this->m_aJoinFields = array();
}
public function GetSelect()
{
return $this->m_aSelectExpr;
}
public function GetCondition()
{
return $this->m_oConditionExpr;
}
public function PopJoinField()
{
return array_pop($this->m_aJoinFields);
}
public function AddSelect($sAttAlias, $oExpression)
{
$this->m_aSelectExpr[$sAttAlias] = $oExpression;
}
//$oConditionTree = $oConditionTree->LogAnd($oFinalClassRestriction);
public function AddCondition($oExpression)
{
$this->m_oConditionExpr = $this->m_oConditionExpr->LogAnd($oExpression);
}
public function PushJoinField($oExpression)
{
array_push($this->m_aJoinFields, $oExpression);
}
public function GetUnresolvedFields($sAlias, &$aUnresolved)
{
$this->m_oConditionExpr->GetUnresolvedFields($sAlias, $aUnresolved);
foreach($this->m_aSelectExpr as $sColAlias => $oExpr)
{
$oExpr->GetUnresolvedFields($sAlias, $aUnresolved);
}
foreach($this->m_aJoinFields as $oExpression)
{
$oExpression->GetUnresolvedFields($sAlias, $aUnresolved);
}
}
public function Translate($aTranslationData, $bMatchAll = true)
{
$this->m_oConditionExpr = $this->m_oConditionExpr->Translate($aTranslationData, $bMatchAll);
foreach($this->m_aSelectExpr as $sColAlias => $oExpr)
{
$this->m_aSelectExpr[$sColAlias] = $oExpr->Translate($aTranslationData, $bMatchAll);
}
foreach($this->m_aJoinFields as $index => $oExpression)
{
$this->m_aJoinFields[$index] = $oExpression->Translate($aTranslationData, $bMatchAll);
}
}
}
?>